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  • jeesite快速开发平台(七)----代码生成原理

    一、原理讲解


    jeesite代码生成用的是FreeMarker模板引擎结合xml技术来实现的，定义的模板都放在resources/templates/modules/gen下




    一看就知道crud就是基本的增删改查，dao是数据库操作，treetable是有关树方面的模板，其中主要的配置文件就是config.xml,该文件中定义了生成的模板，以及java类型,查询类型,字段显示类型等一些数据。

    1. <?xml version="1.0" encoding="utf-8"?>
    2. <config>
    3. 	<!-- 生成分类 -->
    4. 	<category>
    5. 		<category value="curd" label="增删改查（单表）">
    6. 			<template>curd/controller.xml</template>
    7. 			<template>curd/service.xml</template>
    8. 			<template>category-ref:dao</template>
    9. 			<template>curd/viewForm.xml</template>
    10. 			<template>curd/viewList.xml</template>
    11. 		</category>
    12. 		<category value="curd_many" label="增删改查（一对多）">
    13. 			<template>curd/controller.xml</template>
    14. 			<template>curd/serviceMany.xml</template>
    15. 			<template>category-ref:dao</template>
    16. 			<template>curd/viewFormMany.xml</template>
    17. 			<template>curd/viewList.xml</template>
    18. 			<childTable>
    19. 				<template>category-ref:dao</template>
    20. 			</childTable>
    21. 		</category>
    22. 		<category value="dao" label="仅持久层（dao/entity/mapper）">
    23. 			<template>dao/dao.xml</template>
    24. 			<template>dao/entity.xml</template>
    25. 			<template>dao/mapper.xml</template>
    26. 		</category>
    27. 		<category value="treeTable" label="树结构表（一体）">
    28. 			<template>treetable/controller.xml</template>
    29. 			<template>treetable/service.xml</template>
    30. 			<template>treetable/dao.xml</template>
    31. 			<template>treetable/entity.xml</template>
    32. 			<template>treetable/mapper.xml</template>
    33. 			<template>treetable/viewForm.xml</template>
    34. 			<template>treetable/viewList.xml</template>
    35. 		</category>
    36. 		<category value="treeTableAndList" label="树结构表（左树右表）">
    37. 			<template>category-ref:dao</template>
    38. 		</category>
    39. 	</category>
    40. 	<!-- java类型 -->
    41. 	<javaType>
    42. 		<dict value="String" label="String"/>
    43. 		<dict value="Long" label="Long"/>
    44. 		<dict value="Integer" label="Integer"/>
    45. 		<dict value="Double" label="Double"/>
    46. 		<dict value="java.util.Date" label="Date"/>
    47. 		<dict value="com.thinkgem.jeesite.modules.sys.entity.User" label="User"/>
    48. 		<dict value="com.thinkgem.jeesite.modules.sys.entity.Office" label="Office"/>
    49. 		<dict value="com.thinkgem.jeesite.modules.sys.entity.Area" label="Area"/>
    50. 		<dict value="This" label="ThisObj" description="生成当前对象"/>
    51. 		<dict value="Custom" label="Custom" description="自定义对象，生成后手动设置"/>
    52. 	</javaType>
    53. 	<!-- 查询类型 -->
    54. 	<queryType>
    55. 		<dict value="=" label="="/>
    56. 		<dict value="!=" label="!="/>
    57. 		<dict value=">" label=">"/>
    58. 		<dict value=">=" label=">="/>
    59. 		<dict value="<" label="<"/>
    60. 		<dict value="<=" label="<="/>
    61. 		<dict value="between" label="Between"/>
    62. 		<dict value="like" label="Like"/>
    63. 		<dict value="left_like" label="Left Like"/>
    64. 		<dict value="right_like" label="Right Like"/>
    65. 	</queryType>
    66. 	<!-- 字段显示类型 -->
    67. 	<showType>
    68. 		<dict value="input" label="单行文本"/>
    69. 		<dict value="textarea" label="多行文本"/>
    70. 		<dict value="select" label="下拉选项"/>
    71. 		<dict value="radiobox" label="单选按钮"/>
    72. 		<dict value="checkbox" label="复选框"/>
    73. 		<dict value="dateselect" label="日期选择"/>
    74. 		<dict value="userselect" label="人员选择"/>
    75. 		<dict value="officeselect" label="部门选择"/>
    76. 		<dict value="areaselect" label="区域选择"/>
    77. 		<dict value="treeselect" label="树选择控件"/>
    78. 		<dict value="fileselect" label="文件上传选择"/>
    79. 	</showType>
    80. </config>

    其中 

    1. <childTable>
    2. 	<template>category-ref:dao</template>
    3. </childTable>

    定义了子表，初看jeesite的代码生成，有个困惑的地方就是,一般通过FreeMarker进行代码生成定义的模板都是ftl格式的，而这里却是xml，什么鬼，难道这里不是用FreeMarker进行生成的??我们先来看下xml文件中的内容就清楚了:

    1. <?xml version="1.0" encoding="utf-8"?>
    2. <template>
    3. 	<name>controller</name>
    4. 	<filePath>src/main/java/${packageName}/${moduleName}/web/${subModuleName}</filePath>
    5. 	<fileName>${ClassName}Controller.java</fileName>
    6. 	<content><![CDATA[
    7. /**
    8.  * Copyright &copy; 2012-2016 <a href="https://github.com/thinkgem/jeesite">JeeSite</a> All rights reserved.
    9.  */
    10. package ${packageName}.${moduleName}.web<#if subModuleName != "">.${subModuleName}</#if>;
    11.  
    12. import javax.servlet.http.HttpServletRequest;
    13. import javax.servlet.http.HttpServletResponse;
    14.  
    15. import org.apache.shiro.authz.annotation.RequiresPermissions;
    16. import org.springframework.beans.factory.annotation.Autowired;
    17. import org.springframework.stereotype.Controller;
    18. import org.springframework.ui.Model;
    19. import org.springframework.web.bind.annotation.ModelAttribute;
    20. import org.springframework.web.bind.annotation.RequestMapping;
    21. import org.springframework.web.bind.annotation.RequestParam;
    22. import org.springframework.web.servlet.mvc.support.RedirectAttributes;
    23.  
    24. import com.thinkgem.jeesite.common.config.Global;
    25. import com.thinkgem.jeesite.common.persistence.Page;
    26. import com.thinkgem.jeesite.common.web.BaseController;
    27. import com.thinkgem.jeesite.common.utils.StringUtils;
    28. import ${packageName}.${moduleName}.entity<#if subModuleName != "">.${subModuleName}</#if>.${ClassName};
    29. import ${packageName}.${moduleName}.service<#if subModuleName != "">.${subModuleName}</#if>.${ClassName}Service;
    30.  
    31. /**
    32.  * ${functionName}Controller
    33.  * @author ${functionAuthor}
    34.  * @version ${functionVersion}
    35.  */
    36. @Controller
    37. @RequestMapping(value = "${r"${adminPath}"}/${urlPrefix}")
    38. public class ${ClassName}Controller extends BaseController {
    39.  
    40. 	@Autowired
    41. 	private ${ClassName}Service ${className}Service;
    42. 	
    43. 	@ModelAttribute
    44. 	public ${ClassName} get(@RequestParam(required=false) String id) {
    45. 		${ClassName} entity = null;
    46. 		if (StringUtils.isNotBlank(id)){
    47. 			entity = ${className}Service.get(id);
    48. 		}
    49. 		if (entity == null){
    50. 			entity = new ${ClassName}();
    51. 		}
    52. 		return entity;
    53. 	}
    54. 	
    55. 	@RequiresPermissions("${permissionPrefix}:view")
    56. 	@RequestMapping(value = {"list", ""})
    57. 	public String list(${ClassName} ${className}, HttpServletRequest request, HttpServletResponse response, Model model) {
    58. 		Page<${ClassName}> page = ${className}Service.findPage(new Page<${ClassName}>(request, response), ${className}); 
    59. 		model.addAttribute("page", page);
    60. 		return "${lastPackageName}/${viewPrefix}List";
    61. 	}
    62.  
    63. 	@RequiresPermissions("${permissionPrefix}:view")
    64. 	@RequestMapping(value = "form")
    65. 	public String form(${ClassName} ${className}, Model model) {
    66. 		model.addAttribute("${className}", ${className});
    67. 		return "${lastPackageName}/${viewPrefix}Form";
    68. 	}
    69.  
    70. 	@RequiresPermissions("${permissionPrefix}:edit")
    71. 	@RequestMapping(value = "save")
    72. 	public String save(${ClassName} ${className}, Model model, RedirectAttributes redirectAttributes) {
    73. 		if (!beanValidator(model, ${className})){
    74. 			return form(${className}, model);
    75. 		}
    76. 		${className}Service.save(${className});
    77. 		addMessage(redirectAttributes, "保存${functionNameSimple}成功");
    78. 		return "redirect:"+Global.getAdminPath()+"/${viewPrefix}/?repage";
    79. 	}
    80. 	
    81. 	@RequiresPermissions("${permissionPrefix}:edit")
    82. 	@RequestMapping(value = "delete")
    83. 	public String delete(${ClassName} ${className}, RedirectAttributes redirectAttributes) {
    84. 		${className}Service.delete(${className});
    85. 		addMessage(redirectAttributes, "删除${functionNameSimple}成功");
    86. 		return "redirect:"+Global.getAdminPath()+"/${viewPrefix}/?repage";
    87. 	}
    88.  
    89. }]]>
    90. 	</content>
    91. </template>

    其中的xml格式为: 

    1. <?xml version="1.0" encoding="utf-8"?>
    2. <template>
    3. 	<name>controller</name>
    4. 	<filePath>src/main/java/${packageName}/${moduleName}/web/${subModuleName}</filePath>
    5. 	<fileName>${ClassName}Controller.java</fileName>
    6. 	<content><![CDATA[]]>
    7. 	</content>
    8. </template>

    发现其中的奥秘没，他把模板内容都放在了content标签的CDATA[]区。而且config.xml有相对应的bean，用来实现xml转对象:


    1. /**
    2.  * 生成方案Entity
    3.  * @author ThinkGem
    4.  * @version 2013-10-15
    5.  */
    6. @XmlRootElement(name="config")
    7. public class GenConfig implements Serializable {
    8. 	
    9. 	private static final long serialVersionUID = 1L;
    10. 	private List<GenCategory> categoryList;	// 代码模板分类
    11. 	private List<Dict> javaTypeList;		// Java类型
    12. 	private List<Dict> queryTypeList;		// 查询类型
    13. 	private List<Dict> showTypeList;		// 显示类型
    14.  
    15. 	public GenConfig() {
    16. 		super();
    17. 	}
    18.  
    19. 	@XmlElementWrapper(name = "category")
    20. 	@XmlElement(name = "category")
    21. 	public List<GenCategory> getCategoryList() {
    22. 		return categoryList;
    23. 	}
    24.  
    25. 	public void setCategoryList(List<GenCategory> categoryList) {
    26. 		this.categoryList = categoryList;
    27. 	}
    28.  
    29. 	@XmlElementWrapper(name = "javaType")
    30. 	@XmlElement(name = "dict")
    31. 	public List<Dict> getJavaTypeList() {
    32. 		return javaTypeList;
    33. 	}
    34.  
    35. 	public void setJavaTypeList(List<Dict> javaTypeList) {
    36. 		this.javaTypeList = javaTypeList;
    37. 	}
    38.  
    39. 	@XmlElementWrapper(name = "queryType")
    40. 	@XmlElement(name = "dict")
    41. 	public List<Dict> getQueryTypeList() {
    42. 		return queryTypeList;
    43. 	}
    44.  
    45. 	public void setQueryTypeList(List<Dict> queryTypeList) {
    46. 		this.queryTypeList = queryTypeList;
    47. 	}
    48.  
    49. 	@XmlElementWrapper(name = "showType")
    50. 	@XmlElement(name = "dict")
    51. 	public List<Dict> getShowTypeList() {
    52. 		return showTypeList;
    53. 	}
    54.  
    55. 	public void setShowTypeList(List<Dict> showTypeList) {
    56. 		this.showTypeList = showTypeList;
    57. 	}
    58. 	
    59. }

    其中的 

    1. private List<GenCategory> categoryList;	        // 代码模板分类
    2. private List<Dict> javaTypeList;		// Java类型
    3. private List<Dict> queryTypeList;		// 查询类型
    4. private List<Dict> showTypeList;		// 显示类型

    对应的就是xml中预先定义好的 

    1. <?xml version="1.0" encoding="utf-8"?>
    2. <config>
    3. 	<!-- 生成分类 -->
    4. 	<category>
    5. 		<category value="curd" label="增删改查（单表）">
    6. 			<template>curd/controller.xml</template>
    7. 		    ....
    8. 		</category>
    9. 		<category value="curd_many" label="增删改查（一对多）">
    10. 			<template>curd/controller.xml</template>
    11. 			....
    12. 			<childTable>
    13. 				<template>category-ref:dao</template>
    14. 			</childTable>
    15. 		</category>
    16. 		<category value="dao" label="仅持久层（dao/entity/mapper）">
    17. 			<template>dao/dao.xml</template>
    18. 			....
    19. 		</category>
    20. 		<category value="treeTable" label="树结构表（一体）">
    21. 			<template>treetable/controller.xml</template>
    22. 			....
    23. 		</category>
    24. 		<category value="treeTableAndList" label="树结构表（左树右表）">
    25. 			<template>category-ref:dao</template>
    26. 		</category>
    27. 	</category>
    28. 	<!-- java类型 -->
    29. 	<javaType>
    30. 		<dict value="String" label="String"/>
    31. 		....
    32. 	</javaType>
    33. 	<!-- 查询类型 -->
    34. 	<queryType>
    35. 		<dict value="=" label="="/>
    36. 		....
    37. 	</queryType>
    38. 	<!-- 字段显示类型 -->
    39. 	<showType>
    40. 		<dict value="input" label="单行文本"/>
    41. 		<dict value="textarea" label="多行文本"/>
    42. 		....
    43. 	</showType>
    44. </config>


    其中的代码模板分类


    通过@XmlElement(name = "category")引用了GenCategory类，其中定义了主子模板

    1. /**
    2.  * 生成方案Entity
    3.  * @author ThinkGem
    4.  * @version 2013-10-15
    5.  */
    6. @XmlRootElement(name="category")
    7. public class GenCategory extends Dict {
    8. 	
    9. 	private static final long serialVersionUID = 1L;
    10. 	private List<String> template;			// 主表模板
    11. 	private List<String> childTableTemplate;// 子表模板
    12. 	
    13. 	public static String CATEGORY_REF = "category-ref:";
    14.  
    15. 	public GenCategory() {
    16. 		super();
    17. 	}
    18.  
    19. 	@XmlElement(name = "template")
    20. 	public List<String> getTemplate() {
    21. 		return template;
    22. 	}
    23.  
    24. 	public void setTemplate(List<String> template) {
    25. 		this.template = template;
    26. 	}
    27. 	
    28. 	@XmlElementWrapper(name = "childTable")
    29. 	@XmlElement(name = "template")
    30. 	public List<String> getChildTableTemplate() {
    31. 		return childTableTemplate;
    32. 	}
    33.  
    34. 	public void setChildTableTemplate(List<String> childTableTemplate) {
    35. 		this.childTableTemplate = childTableTemplate;
    36. 	}
    37. 	
    38. }

    这两个主子其实对应的就是




    在GenUtils中通过getConfig()方法可获取转换成bean的对象




    而其中的数据就是在配置业务表是初始化的一些数据,比如当我们选择某一张表时，然后点击下一步




    就会调用GenTableController中的form方法，把一些配置参数设置进去



    然后在genTableForm.jsp页面进行渲染

    1. <%@ page contentType="text/html;charset=UTF-8" %>
    2. <%@ include file="/WEB-INF/views/include/taglib.jsp"%>
    3. <html>
    4. <head>
    5. 	<title>业务表管理</title>
    6. 	<meta name="decorator" content="default"/>
    7. 	<script type="text/javascript">
    8. 		$(document).ready(function() {
    9. 			$("#comments").focus();
    10. 			$("#inputForm").validate({
    11. 				submitHandler: function(form){
    12. 					loading('正在提交，请稍等...');
    13. 					$("input[type=checkbox]").each(function(){
    14. 						$(this).after("<input type="hidden" name=""+$(this).attr("name")+"" value=""
    15. 								+($(this).attr("checked")?"1":"0")+""/>");
    16. 						$(this).attr("name", "_"+$(this).attr("name"));
    17. 					});
    18. 					form.submit();
    19. 				},
    20. 				errorContainer: "#messageBox",
    21. 				errorPlacement: function(error, element) {
    22. 					$("#messageBox").text("输入有误，请先更正。");
    23. 					if (element.is(":checkbox")||element.is(":radio")||element.parent().is(".input-append")){
    24. 						error.appendTo(element.parent().parent());
    25. 					} else {
    26. 						error.insertAfter(element);
    27. 					}
    28. 				}
    29. 			});
    30. 		});
    31. 	</script>
    32. </head>
    33. <body>
    34. 	<ul class="nav nav-tabs">
    35. 		<li><a href="${ctx}/gen/genTable/">业务表列表</a></li>
    36. 		<li class="active"><a href="${ctx}/gen/genTable/form?id=${genTable.id}&name=${genTable.name}">业务表<shiro:hasPermission name="gen:genTable:edit">${not empty genTable.id?'修改':'添加'}</shiro:hasPermission><shiro:lacksPermission name="gen:genTable:edit">查看</shiro:lacksPermission></a></li>
    37. 	</ul>
    38. 	<c:choose>
    39. 		<c:when test="${empty genTable.name}">
    40. 			<form:form id="inputForm" modelAttribute="genTable" action="${ctx}/gen/genTable/form" method="post" class="form-horizontal">
    41. 				<form:hidden path="id"/>
    42. 				<sys:message content="${message}"/>
    43. 				<br/>
    44. 				<div class="control-group">
    45. 					<label class="control-label">表名:</label>
    46. 					<div class="controls">
    47. 						<form:select path="name" class="input-xxlarge">
    48. 							<form:options items="${tableList}" itemLabel="nameAndComments" itemValue="name" htmlEscape="false"/>
    49. 						</form:select>
    50. 					</div>
    51. 					<div class="form-actions">
    52. 						<input id="btnSubmit" class="btn btn-primary" type="submit" value="下一步"/> 
    53. 						<input id="btnCancel" class="btn" type="button" value="返 回" onclick="history.go(-1)"/>
    54. 					</div>
    55. 				</div>
    56. 			</form:form>
    57. 		</c:when>
    58. 		<c:otherwise>
    59. 			<form:form id="inputForm" modelAttribute="genTable" action="${ctx}/gen/genTable/save" method="post" class="form-horizontal">
    60. 				<form:hidden path="id"/>
    61. 				<sys:message content="${message}"/>
    62. 				<fieldset>
    63. 					<legend>基本信息</legend>
    64. 					<div class="control-group">
    65. 						<label class="control-label">表名:</label>
    66. 						<div class="controls">
    67. 							<form:input path="name" htmlEscape="false" maxlength="200" class="required" readonly="true"/>
    68. 						</div>
    69. 					</div>
    70. 					<div class="control-group">
    71. 						<label class="control-label">说明:</label>
    72. 						<div class="controls">
    73. 							<form:input path="comments" htmlEscape="false" maxlength="200" class="required"/>
    74. 						</div>
    75. 					</div>
    76. 					<div class="control-group">
    77. 						<label class="control-label">类名:</label>
    78. 						<div class="controls">
    79. 							<form:input path="className" htmlEscape="false" maxlength="200" class="required"/>
    80. 						</div>
    81. 					</div>
    82. 					<div class="control-group">
    83. 						<label class="control-label">父表表名:</label>
    84. 						<div class="controls">
    85. 							<form:select path="parentTable" cssClass="input-xlarge">
    86. 								<form:option value="">无</form:option>
    87. 								<form:options items="${tableList}" itemLabel="nameAndComments" itemValue="name" htmlEscape="false"/>
    88. 							</form:select>
    89. 							 当前表外键：
    90. 							<form:select path="parentTableFk" cssClass="input-xlarge">
    91. 								<form:option value="">无</form:option>
    92. 								<form:options items="${genTable.columnList}" itemLabel="nameAndComments" itemValue="name" htmlEscape="false"/>
    93. 							</form:select>
    94. 							<span class="help-inline">如果有父表，请指定父表表名和外键</span>
    95. 						</div>
    96. 					</div>
    97. 					<div class="control-group hide">
    98. 						<label class="control-label">备注:</label>
    99. 						<div class="controls">
    100. 							<form:textarea path="remarks" htmlEscape="false" rows="4" maxlength="200" class="input-xxlarge"/>
    101. 						</div>
    102. 					</div>
    103. 					<legend>字段列表</legend>
    104. 					<div class="control-group">
    105. 						<table id="contentTable" class="table table-striped table-bordered table-condensed">
    106. 							<thead><tr>
    107. 								<th title="数据库字段名">列名</th>
    108. 								<th title="默认读取数据库字段备注">说明</th>
    109. 								<th title="数据库中设置的字段类型及长度">物理类型</th>
    110. 								<th title="实体对象的属性字段类型">Java类型</th>
    111. 								<th title="实体对象的属性字段（对象名.属性名|属性名2|属性名3，例如：用户user.id|name|loginName，属性名2和属性名3为Join时关联查询的字段）">Java属性名称 <i class="icon-question-sign"></i></th>
    112. 								<th title="是否是数据库主键">主键</th><th title="字段是否可为空值，不可为空字段自动进行空值验证">可空</th><th title="选中后该字段被加入到insert语句里">插入</th>
    113. 								<th title="选中后该字段被加入到update语句里">编辑</th><th title="选中后该字段被加入到查询列表里">列表</th>
    114. 								<th title="选中后该字段被加入到查询条件里">查询</th><th title="该字段为查询字段时的查询匹配放松">查询匹配方式</th>
    115. 								<th title="字段在表单中显示的类型">显示表单类型</th><th title="显示表单类型设置为“下拉框、复选框、点选框”时，需设置字典的类型">字典类型</th><th>排序</th></tr></thead>
    116. 							<tbody>
    117. 							<c:forEach items="${genTable.columnList}" var="column" varStatus="vs">
    118. 								<tr${column.delFlag eq '1'?' class="error" title="已删除的列，保存之后消失！"':''}>
    119. 									<td nowrap>
    120. 										<input type="hidden" name="columnList[${vs.index}].id" value="${column.id}"/>
    121. 										<input type="hidden" name="columnList[${vs.index}].delFlag" value="${column.delFlag}"/>
    122. 										<input type="hidden" name="columnList[${vs.index}].genTable.id" value="${column.genTable.id}"/>
    123. 										<input type="hidden" name="columnList[${vs.index}].name" value="${column.name}"/>${column.name}
    124. 									</td>
    125. 									<td>
    126. 										<input type="text" name="columnList[${vs.index}].comments" value="${column.comments}" maxlength="200" class="required" style="100px;"/>
    127. 									</td>
    128. 									<td nowrap>
    129. 										<input type="hidden" name="columnList[${vs.index}].jdbcType" value="${column.jdbcType}"/>${column.jdbcType}
    130. 									</td>
    131. 									<td>
    132. 										<select name="columnList[${vs.index}].javaType" class="required input-mini" style="85px;*75px">
    133. 											<c:forEach items="${config.javaTypeList}" var="dict">
    134. 												<option value="${dict.value}" ${dict.value==column.javaType?'selected':''} title="${dict.description}">${dict.label}</option>
    135. 											</c:forEach>
    136. 										</select>
    137. 									</td>
    138. 									<td>
    139. 										<input type="text" name="columnList[${vs.index}].javaField" value="${column.javaField}" maxlength="200" class="required input-small"/>
    140. 									</td>
    141. 									<td>
    142. 										<input type="checkbox" name="columnList[${vs.index}].isPk" value="1" ${column.isPk eq '1' ? 'checked' : ''}/>
    143. 									</td>
    144. 									<td>
    145. 										<input type="checkbox" name="columnList[${vs.index}].isNull" value="1" ${column.isNull eq '1' ? 'checked' : ''}/>
    146. 									</td>
    147. 									<td>
    148. 										<input type="checkbox" name="columnList[${vs.index}].isInsert" value="1" ${column.isInsert eq '1' ? 'checked' : ''}/>
    149. 									</td>
    150. 									<td>
    151. 										<input type="checkbox" name="columnList[${vs.index}].isEdit" value="1" ${column.isEdit eq '1' ? 'checked' : ''}/>
    152. 									</td>
    153. 									<td>
    154. 										<input type="checkbox" name="columnList[${vs.index}].isList" value="1" ${column.isList eq '1' ? 'checked' : ''}/>
    155. 									</td>
    156. 									<td>
    157. 										<input type="checkbox" name="columnList[${vs.index}].isQuery" value="1" ${column.isQuery eq '1' ? 'checked' : ''}/>
    158. 									</td>
    159. 									<td>
    160. 										<select name="columnList[${vs.index}].queryType" class="required input-mini">
    161. 											<c:forEach items="${config.queryTypeList}" var="dict">
    162. 												<option value="${fns:escapeHtml(dict.value)}" ${fns:escapeHtml(dict.value)==column.queryType?'selected':''} title="${dict.description}">${fns:escapeHtml(dict.label)}</option>
    163. 											</c:forEach>
    164. 										</select>
    165. 									</td>
    166. 									<td>
    167. 										<select name="columnList[${vs.index}].showType" class="required" style="100px;">
    168. 											<c:forEach items="${config.showTypeList}" var="dict">
    169. 												<option value="${dict.value}" ${dict.value==column.showType?'selected':''} title="${dict.description}">${dict.label}</option>
    170. 											</c:forEach>
    171. 										</select>
    172. 									</td>
    173. 									<td>
    174. 										<input type="text" name="columnList[${vs.index}].dictType" value="${column.dictType}" maxlength="200" class="input-mini"/>
    175. 									</td>
    176. 									<td>
    177. 										<input type="text" name="columnList[${vs.index}].sort" value="${column.sort}" maxlength="200" class="required input-min digits"/>
    178. 									</td>
    179. 								</tr>
    180. 							</c:forEach>
    181. 							</tbody>
    182. 						</table>
    183. 					</div>
    184. 				</fieldset>
    185. 				<div class="form-actions">
    186. 					<shiro:hasPermission name="gen:genTable:edit"><input id="btnSubmit" class="btn btn-primary" type="submit" value="保 存"/> </shiro:hasPermission>
    187. 					<input id="btnCancel" class="btn" type="button" value="返 回" onclick="history.go(-1)"/>
    188. 				</div>
    189. 			</form:form>
    190. 		</c:otherwise>
    191. 	</c:choose>
    192. </body>
    193. </html>

    注意其中的name属性 

    name="columnList[${vs.index}].xxx"


    在GenTable中是用list来装的


    所以在spring mvc数据绑定的时候可以通过下标的形式来传值




    业务表配置好之后，就是生成代码，新建生成方案配置，然后输入一些必须的信息




    点击保存并生成代码，会调用GenSchemeController中的save()方法，传入一些参数




    然后调用genSchemeService.save()方法进行生成




    如果是1的话就生成代码




    generateCode方法如下:

    1. 	private String generateCode(GenScheme genScheme){
    2.  
    3. 		StringBuilder result = new StringBuilder();
    4. 		
    5. 		// 查询主表及字段列
    6. 		GenTable genTable = genTableDao.get(genScheme.getGenTable().getId());
    7. 		genTable.setColumnList(genTableColumnDao.findList(new GenTableColumn(new GenTable(genTable.getId()))));
    8. 		
    9. 		// 获取所有代码模板
    10. 		GenConfig config = GenUtils.getConfig();
    11. 		
    12. 		// 获取模板列表
    13. 		List<GenTemplate> templateList = GenUtils.getTemplateList(config, genScheme.getCategory(), false); //获取所有不包含childTableTemplateList的数据
    14. 		List<GenTemplate> childTableTemplateList = GenUtils.getTemplateList(config, genScheme.getCategory(), true);
    15. 		
    16. 		// 如果有子表模板，则需要获取子表列表
    17. 		if (childTableTemplateList.size() > 0){
    18. 			GenTable parentTable = new GenTable();
    19. 			parentTable.setParentTable(genTable.getName());
    20. 			genTable.setChildList(genTableDao.findList(parentTable));
    21. 		}
    22. 		
    23. 		// 生成子表模板代码
    24. 		for (GenTable childTable : genTable.getChildList()){
    25. 			childTable.setParent(genTable);
    26. 			childTable.setColumnList(genTableColumnDao.findList(new GenTableColumn(new GenTable(childTable.getId()))));
    27. 			genScheme.setGenTable(childTable);
    28. 			Map<String, Object> childTableModel = GenUtils.getDataModel(genScheme);
    29. 			for (GenTemplate tpl : childTableTemplateList){
    30. 				result.append(GenUtils.generateToFile(tpl, childTableModel, genScheme.getReplaceFile()));
    31. 			}
    32. 		}
    33. 		
    34. 		// 生成主表模板代码
    35. 		genScheme.setGenTable(genTable);
    36. 		Map<String, Object> model = GenUtils.getDataModel(genScheme);
    37. 		for (GenTemplate tpl : templateList){
    38. 			result.append(GenUtils.generateToFile(tpl, model, genScheme.getReplaceFile()));
    39. 		}
    40. 		return result.toString();
    41. 	}

    该方法主要是做一些，获取模板，然后进行数据绑定等一些工作。其中的

    1. // 获取模板列表
    2. List<GenTemplate> templateList = GenUtils.getTemplateList(config, genScheme.getCategory(), false); //获取所有不包含childTableTemplateList的数据
    3. List<GenTemplate> childTableTemplateList = GenUtils.getTemplateList(config, genScheme.getCategory(), true);

    getTemplateList方法为

    1. 	/**
    2. 	 * 根据分类获取模板列表
    3. 	 * @param config
    4. 	 * @param category
    5. 	 * @param isChildTable 是否是子表
    6. 	 * @return
    7. 	 */
    8. 	public static List<GenTemplate> getTemplateList(GenConfig config, String category, boolean isChildTable){
    9. 		List<GenTemplate> templateList = Lists.newArrayList();
    10. 		if (config !=null && config.getCategoryList() != null && category !=  null){
    11. 			for (GenCategory e : config.getCategoryList()){
    12. 				if (category.equals(e.getValue())){
    13. 					List<String> list = null;
    14. 					if (!isChildTable){
    15. 						list = e.getTemplate();
    16. 					}else{
    17. 						list = e.getChildTableTemplate();
    18. 					}
    19. 					if (list != null){
    20. 						for (String s : list){
    21. 							if (StringUtils.startsWith(s, GenCategory.CATEGORY_REF)){
    22. 								templateList.addAll(getTemplateList(config, StringUtils.replace(s, GenCategory.CATEGORY_REF, ""), false));
    23. 							}else{
    24. 								GenTemplate template = fileToObject(s, GenTemplate.class);
    25. 								if (template != null){
    26. 									templateList.add(template);
    27. 								}
    28. 							}
    29. 						}
    30. 					}
    31. 					break;
    32. 				}
    33. 			}
    34. 		}
    35. 		return templateList;
    36. 	}

    通过标志位来获取 

    1. if (!isChildTable){
    2. 	list = e.getTemplate();
    3. }else{
    4. 	list = e.getChildTableTemplate();
    5. }
    主表，子表模板，生成文件的方法是GenUtils.generateToFile(tpl, model, genScheme.getReplaceFile()) 

    1. 	/**
    2. 	 * 生成到文件
    3. 	 * @param tpl
    4. 	 * @param model
    5. 	 * @param isReplaceFile
    6. 	 * @return
    7. 	 */
    8. 	public static String generateToFile(GenTemplate tpl, Map<String, Object> model, boolean isReplaceFile){
    9. 		// 获取生成文件
    10. 		String fileName = Global.getProjectPath() + File.separator 
    11. 				+ StringUtils.replaceEach(FreeMarkers.renderString(tpl.getFilePath() + "/", model), 
    12. 						new String[]{"//", "/", "."}, new String[]{File.separator, File.separator, File.separator})
    13. 				+ FreeMarkers.renderString(tpl.getFileName(), model);
    14. 		logger.debug(" fileName === " + fileName);
    15.  
    16. 		// 获取生成文件内容
    17. 		String content = FreeMarkers.renderString(StringUtils.trimToEmpty(tpl.getContent()), model);
    18. 		logger.debug(" content === 
" + content);
    19. 		
    20. 		// 如果选择替换文件，则删除原文件
    21. 		if (isReplaceFile){
    22. 			FileUtils.deleteFile(fileName);
    23. 		}
    24. 		
    25. 		// 创建并写入文件
    26. 		if (FileUtils.createFile(fileName)){
    27. 			FileUtils.writeToFile(fileName, content, true);
    28. 			logger.debug(" file create === " + fileName);
    29. 			return "生成成功："+fileName+"<br/>";
    30. 		}else{
    31. 			logger.debug(" file extents === " + fileName);
    32. 			return "文件已存在："+fileName+"<br/>";
    33. 		}
    34. 	}

    生成成功之后，会有如下提示:




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  • 原文地址：https://www.cnblogs.com/jpfss/p/9989979.html
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