FastJson/spring boot: json输出

时间：2023-03-09 01:59:57
FastJson/spring boot: json输出

1.引入FastJson依赖包

 <!-- FastJson -->

    <dependency>

    	<groupId>com.alibaba</groupId>

    	<artifactId>fastjson</artifactId>

    	<version>1.2.15</version>

    </dependency>

　　

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>

  	<plugins>

  		<plugin>

  			<groupId>org.apache.maven.plugins</groupId>

  			<artifactId>maven-compiler-plugin</artifactId>

  			<configuration>

  				<source>${java.version}</source>

  				<target>${java.version}</target>

  			</configuration>

  		</plugin>

  	</plugins>

  </build>

</project>

　　

2.App.java继承WebMvcConfigurerAdapter，然后复写configureMessageConverters方法，加入自定义的FastJson配置

/**

	 * 复写configureMessageConverters

	 */

	@Override

	public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {

		// TODO Auto-generated method stub

		//super.configureMessageConverters(converters);

		/*

		 * 1、需要先定义一个 convert 转换消息的对象;

		 * 2、添加fastJson 的配置信息，比如：是否要格式化返回的json数据;

		 * 3、在convert中添加配置信息.

		 * 4、将convert添加到converters当中.

		 *

		 */

		// 1、需要先定义一个 convert 转换消息的对象;

		FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();

		//2、添加fastJson 的配置信息，比如：是否要格式化返回的json数据;

		FastJsonConfig fastJsonConfig = new FastJsonConfig();

		fastJsonConfig.setSerializerFeatures(

				SerializerFeature.PrettyFormat

		);

		//3、在convert中添加配置信息.

		fastConverter.setFastJsonConfig(fastJsonConfig);

		//4、将convert添加到converters当中.

		converters.add(fastConverter);

	}

　　

APP.JAVA参考

package com.muyang.boot1;

import java.util.List;

import org.apache.log4j.Logger;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.http.converter.HttpMessageConverter;

import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

import com.alibaba.fastjson.serializer.SerializerFeature;

import com.alibaba.fastjson.support.config.FastJsonConfig;

import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;

/**

 * Hello world!

 *

 */

@SpringBootApplication

public class App extends WebMvcConfigurerAdapter

{

	private static Logger logger = Logger.getLogger(App.class);

	/**

	 * 复写configureMessageConverters

	 */

	@Override

	public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {

		// TODO Auto-generated method stub

		//super.configureMessageConverters(converters);

		/*

		 * 1、需要先定义一个 convert 转换消息的对象;

		 * 2、添加fastJson 的配置信息，比如：是否要格式化返回的json数据;

		 * 3、在convert中添加配置信息.

		 * 4、将convert添加到converters当中.

		 *

		 */

		// 1、需要先定义一个 convert 转换消息的对象;

		FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();

		//2、添加fastJson 的配置信息，比如：是否要格式化返回的json数据;

		FastJsonConfig fastJsonConfig = new FastJsonConfig();

		fastJsonConfig.setSerializerFeatures(

				SerializerFeature.PrettyFormat

		);

		//3、在convert中添加配置信息.

		fastConverter.setFastJsonConfig(fastJsonConfig);

		//4、将convert添加到converters当中.

		converters.add(fastConverter);

	}

    public static void main( String[] args )

    {

        //System.out.println( "Hello World!" );\

    	SpringApplication.run(App.class, args);

    	logger.info("--sprint-boot-");

    }

}

　　

3.建立Demo.java类，用来创建json输出之前的对象，并创建new Date()日期格式化属性

JSONField(format="yyyy-MM-dd HH:mm")

private Date createTime

/**

	 * 格式化时间

	 */

	@JSONField(format="yyyy-MM-dd HH:mm")

	private Date createTime;	

	/**

	 * 不显示json

	 */

	@JSONField(serialize=false)

	private String remarks;

　　

Demo.java参考

package com.muyang.boot1;

import java.util.Date;

import com.alibaba.fastjson.annotation.JSONField;

public class Demo {

	private int id;

	private String name;

	/**

	 * 格式化时间

	 */

	@JSONField(format="yyyy-MM-dd HH:mm")

	private Date createTime;	

	/**

	 * 不显示json

	 */

	@JSONField(serialize=false)

	private String remarks;

	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 Date getCreateTime() {

		return createTime;

	}

	public void setCreateTime(Date createTime) {

		this.createTime = createTime;

	}

	public String getRemarks() {

		return remarks;

	}

	public void setRemarks(String remarks) {

		this.remarks = remarks;

	}

}

　　

4.HelloController.java控制器

普通输出

@RequestMapping(value="/hello")

	public String hello()

	{

		return "hello";

	}

　　

json输出

/**

* charset解决中文乱码

**/

@RequestMapping(value="/getDemo", produces = "application/json; charset=utf-8")

	public Demo getDemo()

	{

		Demo demo = new Demo();

		demo.setId(1);

		demo.setName("张三");

		demo.setCreateTime(new Date());

		demo.setRemarks("这是备注信息");

		return demo;

	}

　　

HelloController.java参考

package com.muyang.boot1;

import java.util.Date;

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

import org.springframework.web.bind.annotation.ResponseBody;

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

@RestController

public class HelloController {

	@RequestMapping(value="/hello")

	public String hello()

	{

		return "hello";

	}

	@RequestMapping(value="/getDemo", produces = "application/json; charset=utf-8")

	public Demo getDemo()

	{

		Demo demo = new Demo();

		demo.setId(1);

		demo.setName("张三");

		demo.setCreateTime(new Date());

		demo.setRemarks("这是备注信息");

		return demo;

	}

}

　　

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