SpringBoot集成jsp
2017-12-18 14:31
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注:Spring boot不推荐使用jsp,有强迫症者可以参考这篇文章简单的运行一个demo!!!
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.pom.xml
3、application.properties文件
4.Controller文件
5.jsp页面
4000
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
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.pom.xml
<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.9.RELEASE</version> </parent> <properties> <!-- 指定jdk的版本 ，这里我们使用jdk 1.8 --> <java.version>1.8</java.version> </properties> <dependencies> <!-- web支持: 1、web mvc; 2、restful; 3、jackjson支持; 4、aop ........ --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- servlet 依赖. --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> </dependency> <!-- tomcat 的支持.--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> </dependency>
3、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
4.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;
@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";
}
}5.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>
6.遇到的问题1、Spring Boot: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean4000
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>
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