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

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详解SpringBoot集成jsp（附源码）+遇到的坑

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