springMvc如何返回JSON数据

桃扇骨 2022-03-29 18:41 371阅读 0赞

1.在pom.xml引用jar

<dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-databind</artifactId>
          <version>2.9.5</version>
    </dependency>
    <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-core</artifactId>
          <version>2.9.5</version>
    </dependency>
    <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-annotations</artifactId>
          <version>2.9.5</version>
     </dependency>

2.配置springMvc配置文件dispatcher-servlet.xml  
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3.创建一个Controller，在方法上配置@ResponseBody注解  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MDY4OTgyMg_size_16_color_FFFFFF_t_70 1]  
4.用ajax发送请求返回JSON数据

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