Spring Boot JSON消息转换器
来源:互联网 发布:若四阶矩阵a与b相似 编辑:程序博客网 时间:2024/06/09 15:21
package com.lawu.eshop.merchant.api.config;
import java.io.IOException;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializerProvider;
@Configuration
public class WebConfig {
// @Bean
// public MappingJackson2HttpMessageConverter customJackson2HttpMessageConverter() {
// MappingJackson2HttpMessageConverter jsonConverter = new MappingJackson2HttpMessageConverter();
// ObjectMapper objectMapper = new ObjectMapper();
// objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
// jsonConverter.setObjectMapper(objectMapper);
// return jsonConverter;
// }
//
// @Override
// public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
// converters.add(customJackson2HttpMessageConverter());
// super.addDefaultHttpMessageConverters(converters);
// }
@Bean
@Primary
@ConditionalOnMissingBean(ObjectMapper.class)
public ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder) {
ObjectMapper objectMapper = builder.createXmlMapper(false).build();
/*
* 返回的JSON字符串中含有我们并不需要的字段,那么当对应的实体类中不含有该字段时,会抛出一个异常,告诉你有些字段没有在实体类中找到
*/
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
SerializerProvider serializerProvider = objectMapper.getSerializerProvider();
// 允许单引号
//objectMapper.configure(JsonParser.Feature.ALLOW_SINGLE_QUOTES, true);
// 字段和值都加引号
//objectMapper.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
// 数字也加引号
//objectMapper.configure(JsonGenerator.Feature.WRITE_NUMBERS_AS_STRINGS, true);
//objectMapper.configure(JsonGenerator.Feature.QUOTE_NON_NUMERIC_NUMBERS, true);
//Null值输出空字符串
serializerProvider.setNullValueSerializer(new JsonSerializer<Object>() {
@Override
public void serialize(Object o, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException, JsonProcessingException {
jsonGenerator.writeString("");
}
});
return objectMapper;
}
}
import java.io.IOException;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializerProvider;
@Configuration
public class WebConfig {
// @Bean
// public MappingJackson2HttpMessageConverter customJackson2HttpMessageConverter() {
// MappingJackson2HttpMessageConverter jsonConverter = new MappingJackson2HttpMessageConverter();
// ObjectMapper objectMapper = new ObjectMapper();
// objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
// jsonConverter.setObjectMapper(objectMapper);
// return jsonConverter;
// }
//
// @Override
// public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
// converters.add(customJackson2HttpMessageConverter());
// super.addDefaultHttpMessageConverters(converters);
// }
@Bean
@Primary
@ConditionalOnMissingBean(ObjectMapper.class)
public ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder) {
ObjectMapper objectMapper = builder.createXmlMapper(false).build();
/*
* 返回的JSON字符串中含有我们并不需要的字段,那么当对应的实体类中不含有该字段时,会抛出一个异常,告诉你有些字段没有在实体类中找到
*/
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
SerializerProvider serializerProvider = objectMapper.getSerializerProvider();
// 允许单引号
//objectMapper.configure(JsonParser.Feature.ALLOW_SINGLE_QUOTES, true);
// 字段和值都加引号
//objectMapper.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
// 数字也加引号
//objectMapper.configure(JsonGenerator.Feature.WRITE_NUMBERS_AS_STRINGS, true);
//objectMapper.configure(JsonGenerator.Feature.QUOTE_NON_NUMERIC_NUMBERS, true);
//Null值输出空字符串
serializerProvider.setNullValueSerializer(new JsonSerializer<Object>() {
@Override
public void serialize(Object o, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException, JsonProcessingException {
jsonGenerator.writeString("");
}
});
return objectMapper;
}
}
8 0
- Spring Boot JSON消息转换器
- Spring MVC处理JSON数据(3)-自定义消息转换器
- spring boot框架学习7-spring boot的web开发(3)-自定义消息转换器
- spring boot集成Dozer转换器
- Spring boot字符串转日期的转换器
- Spring Boot Json注解
- ActiveMQ之spring集成消息转换器MessageConverter
- Spring自定义消息转换器替换ResponseBody
- Spring MVC 3.x 消息转换器
- Spring MVC 中,自动加载 JSON 转换器
- 消息转换器
- Spring boot websocket消息推送
- JSON转换器
- JSON转换器
- Spring Boot返回json数据
- spring boot 请求参数增加string 转date全局转换器
- Spring Boot使用全局类型转换器(全局日期转换器为例)
- Spring MVC @JsonView实现在消息转换器中过滤数据
- AD09布线规则
- Android 7.1
- 安装Vmware workstation虚拟机(含软件和注册码)
- 适应手机屏幕的web页面
- HTTP 响应状态码
- Spring Boot JSON消息转换器
- nginx学习文档之一 安装nginx-Linux下安装nginx
- Android 剪贴板详解
- Tomcat 服务器的目录结构和配置
- 安装Ubuntu14.04版本的操作系统
- Mr.Smile填坑记——POST上传文件(图片、视频等)
- Qt
- Android框架之路——Glide的使用
- leectcode 496. Next Greater Element I