spring boot: 输出json

spring boot:  输出json

注意：关闭java的Terminate后，在重新启动，否则报错

 

 

app.java启动配置

package com.muyang.boot1;

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);
  }

}

　　

创建book.java类

package com.muyang.boot1;

public class Book {

  private int id;

  private String name;

  private String author;

  public int getId() {
    return id;
  }

  public void setId(int id) {
    this.id = id;
  }

  public String getName() {
    return name;
  }

  public void setName(String name) {
    this.name = name;
  }

  public String getAuthor() {
    return author;
  }

  public void setAuthor(String author) {
    this.author = author;
  }





}

　　

控制器类HelloController.java

url映射

package com.muyang.boot1;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping(value="/h3")
public class Hello3Controller {

  @RequestMapping(value="/hello")
  public String hello()
  {
    return "hello world";
  }

  @RequestMapping(value="/getBook", produces="application/json; charset=utf-8")
  public Book getBook()
  {
    Book book = new Book();
    book.setId(1);
    book.setName("中国近代史");
    book.setAuthor("李四");
    return book;
  }

}

　　

 

http://localhost:8080/h3/hello

结果：

"hello world"

　　

http://localhost:8080/h3/getBook

结果：

{
  "author":"李四",
  "id":1,
  "name":"中国近代史"
}

　　

 

pom.xml参考

<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.muyang</groupId>
  <artifactId>boot1</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>boot1</name>
  <url>http://maven.apache.org</url>


  <!-- Inherit defaults from Spring Boot -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.9.RELEASE</version>
        <!--<version>2.0.1.RELEASE</version>-->
    </parent>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <java.version>1.8</java.version>
  </properties>

  <dependencies>

  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <!-- 
      自动依赖parent里面的版本
      <version></version>
     -->
  </dependency>

  <!--  dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency-->


    <!-- FastJson -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.15</version>
    </dependency>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>



  </dependencies>


  <build>
    <finalName>boot1</finalName>
    <!-- 在这里添加springloader plugin 热部署-->
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
        <dependencies>
          <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>springloaded</artifactId>
            <version>1.2.4.RELEASE</version>
          </dependency>
        </dependencies>
        <executions>
          <execution>
            <goals>
            <goal>repackage</goal>            
            </goals>
            <configuration>
              <classifier>exec</classifier>
            </configuration>
          </execution>
        </executions>

      </plugin>
    </plugins>
  </build>

</project>