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詳解SpringBoot集成jsp（附源碼）+遇到的坑

本文介紹了SpringBoot集成jsp（附源碼）+遇到的坑，分享給大家

1、大體步驟

（1）創(chuàng)建Maven web project；

（2）在pom.xml文件添加依賴(lài)；

（3）配置application.properties支持jsp

（4）編寫(xiě)測(cè)試Controller

（5）編寫(xiě)JSP頁(yè)面

（6）編寫(xiě)啟動(dòng)類(lèi)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

# 頁(yè)面默認(rèn)前綴目錄
spring.mvc.view.prefix=/WEB-INF/jsp/
# 響應(yīng)頁(yè)面默認(rèn)后綴
spring.mvc.view.suffix=.jsp
# 自定義屬性，可以在Controller中讀取
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 {

 // 從 application.properties 中讀取配置，如取不到默認(rèn)值為Hello
 @Value("${application.hello:Hello}")
 private String hello;


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

 }

}

6、jsp頁(yè)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、遇到的問(wèn)題

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

把pom中所有的scope>provided/scope>注釋掉

2、報(bào)404

　　1>注意controller和restcontroller區(qū)別

　　2>檢查application.properties

　　3>檢查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

解決方案：添加以下依賴(lài)

  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

解決方案：添加

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

刪除其他依賴(lài)中的scope>provided/scope>

8、源碼地址

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

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