springboot2.0之jsp整合

    这篇博客是学习springboot整合各种三方框架后基本的CRUD操作。

　　1，整合jsp

         注意springboot默认是不支持jsp的，所以我们利用springboot集成jsp时，一定要创建成一个war类型项目，同时要引入外部tomcat。

        如项目结构:

       

      pom.xml

      

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.sb</groupId>
  <artifactId>springboot2.0-jsp</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  
   <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.0.RELEASE</version>
    </parent>
    <dependencies>
        <!-- SpringBoot 对lombok 支持 -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

        <!-- SpringBoot web 核心组件 -->
        <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>
        </dependency>
        <!-- SpringBoot 外部tomcat支持 -->
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
        </dependency>

        <!-- springboot-log4j -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-log4j</artifactId>
            <version>1.3.8.RELEASE</version>
        </dependency>
        <!-- springboot-aop 技术 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>

    </dependencies>
</project>

 User实体类：

package com.springboot.pojo;

import lombok.Data;
import lombok.extern.slf4j.Slf4j;

/**
 * user实体类
 * @author Administrator
 *
 */
//该注解表示为当前类生产getter setter方法 是lombok的方法
@Data
//该注解表示打印日志信息
@Slf4j
public class User {

    private Long id;
    private String name;
    private Integer age;
    
    public User() {
        // TODO Auto-generated constructor stub
    }
    
    public User(Long id, String name, Integer age) {
        super();
        this.id = id;
        this.name = name;
        this.age = age;
    }
    
    
}

控制层：

package com.springboot.controller;

import java.util.ArrayList;
import java.util.List;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.springboot.pojo.User;

/**
 * User对象控制层
 * @author Administrator
 *
 */
@Controller
public class UserController {

    @RequestMapping("/getList")
    public String getList(Model model){
        List<User> list = new ArrayList<User>();
        list.add(new User(1L, "东东", 15));
        list.add(new User(2L, "南南", 11));
        list.add(new User(3L, "西西", 16));
        list.add(new User(4L, "贝贝", 12));
        model.addAttribute("list", list);
        return "index";
    }
    
    @RequestMapping("/getUser")
    @ResponseBody
    public String getUser(Long id){
        String message = null;
        if(1==id){
            message = "查询成功";
        }else{
            message = "找不到指定对象";
        }
        return message;
    }
}

App.java

package com.springboot;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class App {

    public static void main(String[] args) {
        SpringApplication.run(App.class, args);
    }

}

  在resources目录下创建属性文件application.peroperties(这是springboot默认的配置文件最好不要改名字)

###配置前后缀关系
spring.mvc.view.prefix=/WEB-INF/jsp/
spring.mvc.view.suffix=.jsp

  相信前面这段代码大家都不默认。

最后

<%@ 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>Insert title here</title>
</head>
<body>
  ${list}
</body>
</html>

通过App.java中的main函数启动程序

浏览器键入http://localhost:8080/getList

至此我们的springboot整合jsp就以及完成了，在接下来我会在此项目的基础上整合mybatis等一些其他常用框架。