zoukankan      html  css  js  c++  java

  • 详解SpringBoot集成jsp（附源码）+遇到的坑

    本文介绍了SpringBoot集成jsp（附源码）+遇到的坑 ，分享给大家

    1、大体步骤

    （1）创建Maven web project；

    （2）在pom.xml文件添加依赖；

    （3）配置application.properties支持jsp

    （4）编写测试Controller

    （5）编写JSP页面

    （6）编写启动类App.java

    2、新建SpringInitialzr

    3、pom文件

     <dependencies>
    
  <dependency>
    
   <groupId>org.springframework.boot</groupId>
    
   <artifactId>spring-boot-starter-web</artifactId>
    
  </dependency>
    
  <dependency>
    
   <groupId>org.springframework.boot</groupId>
    
   <artifactId>spring-boot-starter-tomcat</artifactId>
    
   <scope>provided</scope>
    
  </dependency>
    
  <dependency>
    
   <groupId>org.apache.tomcat.embed</groupId>
    
   <artifactId>tomcat-embed-jasper</artifactId>
    
  </dependency>
    
  <dependency>
    
   <groupId>org.springframework.boot</groupId>
    
   <artifactId>spring-boot-starter-test</artifactId>
    
   <scope>test</scope>
    
  </dependency>
    
 </dependencies>

    4、application.properties文件

    # 页面默认前缀目录
spring.mvc.view.prefix=/WEB-INF/jsp/
# 响应页面默认后缀
spring.mvc.view.suffix=.jsp
# 自定义属性，可以在Controller中读取
application.hello=Hello GOD

    5、Controller文件

    package com.example;

    

import org.springframework.beans.factory.annotation.Value;
    
import org.springframework.stereotype.Controller;
    
import org.springframework.web.bind.annotation.RequestMapping;

    

import java.util.Map;
    

/**
    
 * Created by Gensis on 2016/9/9.
    
 */
    
@Controller

    

public class HelloController {

    

 // 从 application.properties 中读取配置，如取不到默认值为Hello
    
 @Value("${application.hello:Hello}")
    
 private String hello;

    


 @RequestMapping("/helloJsp")
    
 public String helloJsp(Map<String, Object> map) {
    
  System.out.println("HelloController.helloJsp().hello=" + hello);
    
  map.put("hello", hello);
    
  return "helloJsp";
    

    
 }
    

    
}

    6、jsp页面

    <%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8" %>
    
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
    
<html>
    
<head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>GOD</title></head>
    
<body>
    
helloJsp
    
<hr>
    
${hello}
    
</body>
    
</html>

    7、遇到的问题

    1、Spring Boot: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean

    把pom中所有的<scope>provided</scope>注释掉

    2、报404

    　　<1>注意controller和restcontroller区别

    　　<2>检查application.properties

    　　<3>检查pom是否缺支持jsp包

    3、Failed to introspect annotated methods on class org.springframework.boot.web.support.SpringBootServletInitializer

    org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [com.example.SampleWebJspApplication]; nested exception is java.lang.IllegalStateException: Failed to introspect annotated methods on class org.springframework.boot.web.support.SpringBootServletInitializer
    
 at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:187) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    
 at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:321) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    
 at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:243) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    
 at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:273) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    
 at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:98) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    
 at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:681) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    
 at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:523) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    
 at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
    
 at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
    
 at org.springframework.boot.SpringApplication.run(SpringApplication.java:313) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
    
 at org.springframework.boot.SpringApplication.run(SpringApplication.java:1185) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
    
 at org.springframework.boot.SpringApplication.run(SpringApplication.java:1174) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
    
 at com.example.SampleWebJspApplication.main(SampleWebJspApplication.java:20) [classes/:na]
    
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_77]
    
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_77]
    
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_77]
    
 at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_77]
    
 at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147) [idea_rt.jar:na]
    
Caused by: java.lang.IllegalStateException: Failed to introspect annotated methods on class org.springframework.boot.web.support.SpringBootServletInitializer
    
 at org.springframework.core.type.StandardAnnotationMetadata.getAnnotatedMethods(StandardAnnotationMetadata.java:163) ~[spring-core-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    
 at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:301) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    
 at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:237) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    
 at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:204) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    
 at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:173) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    
 ... 17 common frames omitted

     解决方案：添加以下依赖

    <dependency>

    <groupId>org.apache.tomcat.embed</groupId>

    <artifactId>tomcat-embed-jasper</artifactId>

    </dependency>

    4、java.lang.NoClassDefFoundError: javax/servlet/ServletContext 

    Caused by: java.lang.NoClassDefFoundError: javax/servlet/ServletContext
    
 at java.lang.Class.getDeclaredMethods0(Native Method) ~[na:1.8.0_77]
    
 at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) ~[na:1.8.0_77]
    
 at java.lang.Class.getDeclaredMethods(Class.java:1975) ~[na:1.8.0_77]
    
 at org.springframework.core.type.StandardAnnotationMetadata.getAnnotatedMethods(StandardAnnotationMetadata.java:152) ~[spring-core-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    
 ... 21 common frames omitted
    
Caused by: java.lang.ClassNotFoundException: javax.servlet.ServletContext
    
 at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_77]
    
 at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_77]
    
 at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[na:1.8.0_77]
    
 at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_77]
    
 ... 25 common frames omitted

    解决方案：添加 

      <dependency>
    
   <groupId>javax.servlet</groupId>
    
   <artifactId>javax.servlet-api</artifactId>
    
  </dependency>
    
  <dependency>
    
   <groupId>javax.servlet</groupId>
    
   <artifactId>jstl</artifactId>
    
  </dependency>

    删除其他依赖中的<scope>provided</scope>

    8、源码地址

    https://github.com/Genesisxu/SpringSeries/tree/master/SpringBoot-jsp

查看全文
  • 相关阅读:
    declare handler 声明异常处理的语法
    mysql存储过程获取sqlstate message_text
    mongoTemplate操作内嵌文档
    mysql索引之七：组合索引中选择合适的索引列顺序
    mongoDB的操作总结
    explain之三：MYSQL EXPLAIN语句的extended 选项学习体会,分析诊断工具之二
    状态模式
    代码重构----使用java有限状态机来消除太多的if else判断
    断路器（CircuitBreaker）设计模式
    断路器之一：Hystrix 使用与分析
  • 原文地址：https://www.cnblogs.com/jpfss/p/9103586.html
    • Copyright © 2011-2022 走看看