merge

boot-service/src/main/java/com/xwbing/demo/demo.java

@@ -1,6 +1,8 @@
 package com.xwbing.demo;
 
 import com.alibaba.fastjson.JSONObject;
+import com.alibaba.fastjson.serializer.SerializerFeature;
+import com.xwbing.domain.entity.model.EntityModel;
 
 /**
  * 项目名称: boot-module-demo
@@ -10,8 +12,8 @@ import com.alibaba.fastjson.JSONObject;
  */
 public class demo {
     public static void main(String[] args) {
-        JSONObject jsonObject = new JSONObject();
-        jsonObject.put("aa", null);
-        System.out.println(jsonObject);
+        EntityModel jsonObject=new EntityModel();
+        String s = JSONObject.toJSONString(jsonObject, SerializerFeature.WriteMapNullValue, SerializerFeature.WriteNullStringAsEmpty, SerializerFeature.WriteNullListAsEmpty);
+        System.out.println(s);
     }
 }

boot-service/src/main/java/com/xwbing/domain/entity/model/EntityModel.java

@@ -0,0 +1,17 @@
+package com.xwbing.domain.entity.model;
+
+import java.util.List;
+
+/**
+ * 说明: 实体模型
+ * 项目名称: boot-module-demo
+ * 创建时间: 2017/5/10 16:36
+ * 作者:  xiangwb
+ */
+public class EntityModel {
+    private String character ;
+    private int number;
+    private double decimal;
+    private boolean b;
+    private List list;
+}

boot-web/src/main/java/com/xwbing/configuration/DispatcherServletConfig.java

@@ -1,5 +1,7 @@
 package com.xwbing.configuration;
 
+import com.alibaba.fastjson.serializer.SerializerFeature;
+import com.alibaba.fastjson.support.config.FastJsonConfig;
 import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
 import com.xwbing.handler.LoginInterceptor;
 import org.springframework.context.annotation.Bean;
@@ -102,12 +104,21 @@ public class DispatcherServletConfig extends WebMvcConfigurerAdapter {
     @Bean
     public HttpMessageConverter getFastJsonHttpMessageConverter() {
         FastJsonHttpMessageConverter httpMessageConverter = new FastJsonHttpMessageConverter();
+        //设置支持的Content-Type
         List<MediaType> mediaTypes = new ArrayList<>();
         mediaTypes.add(MediaType.APPLICATION_JSON);
         mediaTypes.add(MediaType.APPLICATION_FORM_URLENCODED);
         mediaTypes.add(MediaType.APPLICATION_OCTET_STREAM);
         mediaTypes.add(MediaType.TEXT_HTML);//避免IE出现下载JSON文件的情况
         httpMessageConverter.setSupportedMediaTypes(mediaTypes);
+        //不忽略对象属性中的null值
+        FastJsonConfig fastJsonConfig = new FastJsonConfig();
+        fastJsonConfig.setSerializerFeatures(
+                SerializerFeature.PrettyFormat,
+//                SerializerFeature.WriteMapNullValue,//输出所有为null的字段
+                SerializerFeature.WriteNullListAsEmpty,//List字段如果为null,输出为[],而非null
+                SerializerFeature.WriteNullStringAsEmpty);//字符类型字段如果为null,输出为"",而非null
+        httpMessageConverter.setFastJsonConfig(fastJsonConfig);
         return httpMessageConverter;
     }
 }