spring-servlet.xml
1 <!-- SpringMVC上传文件时，需要配置MultipartResolver处理器 --> 2 <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 3 <property name="defaultEncoding" value="UTF-8" /> 4 <!-- 指定所上传文件的总大小,单位字节。注意maxUploadSize属性的限制不是针对单个文件，而是所有文件的容量之和 --> 5 <property name="maxUploadSize" value="10240000" /> 6 </bean>
upload/index.jsp
1 <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> 2 <!DOCTYPE HTML> 3 <html> 4 <head> 5 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 6 <title>单图片上传</title> 7 </head> 8 <body> 9 <fieldset> 10 <legend>图片上传</legend> 11 <h2>只能上传单张10M以下的 PNG、JPG、GIF 格式的图片</h2> 12 <form action="/shop/auth/photoUpload" method="post" enctype="multipart/form-data"> 13 选择文件:<input type="file" name="file"> 14 <input type="submit" value="上传"> 15 </form> 16 </fieldset> 17 </body> 18 </html>
或者使用ExtJs
js/user/photoUpload.js
1 Ext.onReady(function(){ 2 Ext.create('Ext.form.Panel', { 3 title: '图片上传', 4 600, 5 bodyPadding: 10, 6 frame: true, 7 renderTo: Ext.getBody(), 8 items: [{ 9 xtype: 'filefield', 10 name: 'file', 11 fieldLabel: 'Photo', 12 labelWidth: 50, 13 msgTarget: 'side', 14 fileUpload: true , 15 allowBlank: false, 16 blankText:"Select an image", 17 emptyText: 'You can only upload a single PNG 10M or less, JPG, GIF format images', 18 anchor: '100%', 19 buttonText: '选择图片' 20 }], 21 22 buttons: [{ 23 text: '上传', 24 handler: function() { 25 var form = this.up('form').getForm(); 26 if(form.isValid()){ 27 form.submit({ 28 url: '/shop/auth/photoUpload', 29 waitMsg: '正在上传图片...', 30 success: function(fp, o) { 31 Ext.Msg.alert('提示', o.result.msg); 32 } 33 }); 34 } 35 } 36 }] 37 }); 38 });
pages/user/photoUpload.html
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta charset="UTF-8"> 5 <title>图片上传</title> 6 </head> 7 <link href="../../ext-4.2.1.883/resources/css/ext-all.css" rel="stylesheet" 8 type="text/css" /> 9 <script type="text/javascript" src="../../ext-4.2.1.883/ext-all.js"></script> 10 <script src="../../js/user/photoUpload.js" type="text/javascript"></script> 11 <body> 12 13 </body> 14 </html>
AuthController.java
/**
* 图片文件上传
*/
@ResponseBody
@RequestMapping(value = "/photoUpload", method = RequestMethod.POST)
public ResultData<Object> photoUpload(MultipartFile file, HttpServletRequest request, HttpServletResponse response, HttpSession session) throws IllegalStateException, IOException {
ResultData<Object> resultData = new ResultData<>();
// 判断用户是否登录
/*User user=(User) session.getAttribute("user");
if (user==null) {
resultData.setCode(40029);
resultData.setMsg("用户未登录");
return resultData;
}*/
if (file != null) {// 判断上传的文件是否为空
String path = null;// 文件路径
String type = null;// 文件类型
String fileName = file.getOriginalFilename();// 文件原名称
System.out.println("上传的文件原名称:" + fileName); // 判断文件类型
type = fileName.indexOf(".") != -1 ? fileName.substring(fileName.lastIndexOf(".") + 1, fileName.length()) : null;
if (type != null) {// 判断文件类型是否为空
if ("GIF".equals(type.toUpperCase()) || "PNG".equals(type.toUpperCase()) || "JPG".equals(type.toUpperCase())) { // 项目在容器中实际发布运行的根路径
String realPath = request.getSession().getServletContext().getRealPath("/"); // 自定义的文件名称
String trueFileName = String.valueOf(System.currentTimeMillis()) + fileName; // 设置存放图片文件的路径
path = realPath +/*System.getProperty("file.separator")+*/trueFileName;
System.out.println("存放图片文件的路径:" + path); // 转存文件到指定的路径
file.transferTo(new File(path));
System.out.println("文件成功上传到指定目录下");
} else {
System.out.println("不是我们想要的文件类型,请按要求重新上传");
return null;
}
} else {
System.out.println("文件类型为空");
return null;
}
} else {
System.out.println("没有找到相对应的文件");
return null;
}
return resultData;
}
ResultData.java 代码如下:
public class ResultData<T> {
private T data;
private int code = 200;
private String msg;
private Boolean success = true;
public Boolean getSuccess() {
return success;
}
public void setSuccess(Boolean success) {
this.success = success;
}
public T getData() {
return data;
}
public void setData(T data) {
this.data = data;
}
public int getCode() {
return code;
}
public void setCode(int code) {
if (200 != code) {
success = false;
}
this.code = code;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
}