springboot 2.0 整合 同时支持jsp+html跳转

springboot项目创建教程 https://blog.csdn.net/q18771811872/article/details/88126835

springboot2.0 跳转html教程 https://blog.csdn.net/q18771811872/article/details/88312862

springboot2.0 跳转jsp教程 https://blog.csdn.net/q18771811872/article/details/88342298

 说明一下 。整合会遇到的问题，

1、pom.xml文件同时放入thymeleaf 架包和jsp支持后，  springboot的return模版会默认跳转到html  ，

那怕是你并没有配置thymeleaf的属性

解决方案，  使用getRequestDispatcher方法来跳转到jsp页面， 就同时支持html和jsp了 

request.getRequestDispatcher("/WEB-INF/views/testJsp.jsp").forward(request, response);

2、另外 使用getRequestDispatcher跳转到html页面的时候，thymeleaf 模版接收参数可能会出现问题。

解决方案1：html放弃使用thymeleaf 模版，然后在页面主动请求接口数据(AJAX POST等)

解决方案2：html继续使用thymeleaf 模版，用return模版 返回来跳转页面

代码
 UserController.java

package com.example.demo.controller;

import com.example.demo.service.UserService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.annotation.Resource;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author chenlin
 */
@Controller
@RequestMapping("/usersDemo")
public class UserController {
    private static Logger log = LoggerFactory.getLogger(UserController.class);
    @Resource
    UserService userService;

    @ResponseBody
    @RequestMapping(value = "/test", produces = "application/json;charset=UTF-8", method = {RequestMethod.POST, RequestMethod.GET})
    public List> test(){
        log.info("进入了test方法！");
        List> list=userService.userQueryAll();
        return list;
    }
    @RequestMapping(value = "/testHtml", produces = "application/json;charset=UTF-8", method = {RequestMethod.POST, RequestMethod.GET})
    public String testHtml(HttpServletRequest request, HttpServletResponse response){
        List> list=userService.userQueryAll();
        request.setAttribute("list",list);
        log.info("进入了testHtml方法！");
        return "views/testHtml";
    }
    @RequestMapping(value = "/testJsp", produces = "application/json;charset=UTF-8", method = {RequestMethod.POST, RequestMethod.GET})
    public void testJsp( HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        List> list=userService.userQueryAll();
        request.setAttribute("list",list);
        log.info("进入了testJsp方法！");
        request.getRequestDispatcher("/WEB-INF/views/testJsp.jsp").forward(request, response);
    }
}

配置文件

server:
  port: 8080
  tomcat:
    uri-encoding: UTF-8
  servlet:
    context-path: /
spring:
  dataSource:
    type: com.alibaba.druid.pool.DruidDataSource
    url: jdbc:mysql://localhost:3306/db-test?useUnicode=true&characterEncoding=utf8&tinyInt1isBit=false&usessl=false
    username: root
    password: 123456
    driverClassName: com.mysql.jdbc.Driver
  mvc:
    view: #新版本 1.3后可以使用
      suffix: .jsp
      prefix: /WEB-INF/
  view: #老版本 1.4后被抛弃
    suffix: .jsp
    prefix: /WEB-INF/
  thymeleaf:
    #清除缓存
    cache: false
    mode: LEGACYHTML5 #非严格模式
    prefix: /WEB-INF/ #默认 classpath:/templates/
    suffix: .html
    servlet:
      content-type: text/html
mybatis:
  mapper-locations: classpath:com/example/demo/mapper/*Mapper.xml #注意：一定要对应mapper映射xml文件的所在路径
  type-aliases-package: com.example.demo.model # 注意：对应实体类的路径
  configuration:
    call-setters-on-nulls: true # 解决使用map类型接收查询结果的时候为null的字段会没有的情况

pom.xml

    4.0.0
    
        org.springframework.boot
        spring-boot-starter-parent
        2.0.8.RELEASE
         
    
    com.example
    demo
    0.0.1-SNAPSHOT
    demo
    Demo project for Spring Boot

    
        1.8
        5.1.47
    

    
        
            org.springframework.boot
            spring-boot-starter-jdbc
        
        
            org.springframework.boot
            spring-boot-starter-web
        
        
            org.mybatis.spring.boot
            mybatis-spring-boot-starter
            2.0.0
        
        
            org.springframework.boot
            spring-boot-starter-test
            test
        
        
        
            com.alibaba
            druid-spring-boot-starter
            1.1.13
        
        
            mysql
            mysql-connector-java
            ${mysql.version}
        
        
        
            org.springframework.boot
            spring-boot-starter-thymeleaf
        
        
        
            net.sourceforge.nekohtml
            nekohtml
            1.9.22
        
        
        
            org.springframework.boot
            spring-boot-starter-tomcat
            provided
        
        
            org.apache.tomcat.embed
            tomcat-embed-jasper
            provided
        
        
        
            javax.servlet
            javax.servlet-api
            4.0.1
            provided
        
        
        
            javax.servlet
            jstl
        
    

    
        
            
            
                src/main/java
                
                    **/*.xml
                
                false
            
            
                
                src/main/webapp
                META-INF/resources
                
                    **/**
                
            
        
    

以上就完了。  

另外附加一个return 模版的java代码配置， 可以配置return模版的优先级，后面的文件格式，当然只能用getRequestDispatcher来跳转了  

在启动类中添加，另外，配置文件参数和代码可重复    但是代码优先于配置文件。 

/**
 * 添加对jsp支持
 * 
 */
@Bean
public ViewResolver getJspViewResolver() {
    InternalResourceViewResolver internalResourceViewResolver = new InternalResourceViewResolver();
    internalResourceViewResolver.setPrefix("/WEB-INF/");//前缀
    internalResourceViewResolver.setSuffix(".jsp");//后缀
    internalResourceViewResolver.setOrder(0);//优先级
    return internalResourceViewResolver;
}

/**
 * 添加对Freemarker支持
 *
 */
@Bean
public FreeMarkerViewResolver getFreeMarkerViewResolver() {
    FreeMarkerViewResolver freeMarkerViewResolver = new FreeMarkerViewResolver();
    freeMarkerViewResolver.setCache(false);
    freeMarkerViewResolver.setPrefix("/WEB-INF/");//前缀
    freeMarkerViewResolver.setSuffix(".html");//后缀
    freeMarkerViewResolver.setRequestContextAttribute("request");
    freeMarkerViewResolver.setOrder(1);//优先级
    freeMarkerViewResolver.setContentType("text/html;charset=UTF-8");
    return freeMarkerViewResolver;

}

 

 

springboot项目创建教程 https://blog.csdn.net/q18771811872/article/details/88126835

springboot2.0 跳转html教程 https://blog.csdn.net/q18771811872/article/details/88312862

springboot2.0 跳转jsp教程 https://blog.csdn.net/q18771811872/article/details/88342298

源码地址   https://gitee.com/wcccccccc/demo 

原文地址 https://blog.csdn.net/q18771811872/article/details/88343672