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增加JsonMapper日期类型的默认转换格式，并兼容@JsonFormat注解。

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This commit is contained in:
thinkgem
2021-05-26 12:59:09 +08:00
parent 4dae5b4b78
commit ff04855966
2 changed files with 38 additions and 14 deletions
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46
common/src/main/java/com/jeesite/common/mapper/JsonMapper.java
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@@ -4,6 +4,9 @@
package com.jeesite.common.mapper;
import java.io.IOException;
import java.lang.reflect.AnnotatedElement;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.TimeZone;
@@ -13,6 +16,7 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.annotation.JsonInclude.Include;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser.Feature;
@@ -23,10 +27,14 @@ import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.introspect.Annotated;
import com.fasterxml.jackson.databind.introspect.AnnotatedMethod;
import com.fasterxml.jackson.databind.introspect.JacksonAnnotationIntrospector;
import com.fasterxml.jackson.databind.util.JSONPObject;
import com.fasterxml.jackson.module.jaxb.JaxbAnnotationModule;
import com.jeesite.common.collect.ListUtils;
import com.jeesite.common.io.PropertiesUtils;
import com.jeesite.common.lang.DateUtils;
/**
* 简单封装Jackson，实现JSON String<->Java Object的Mapper.
@@ -59,6 +67,31 @@ public class JsonMapper extends ObjectMapper {
// 设置默认时区
this.setTimeZone(TimeZone.getTimeZone(PropertiesUtils.getInstance()
.getProperty("lang.defaultTimeZone", "GMT+08:00")));
// 设置默认日期格式
this.setDateFormat(new SimpleDateFormat(PropertiesUtils.getInstance()
.getProperty("web.json.defaultDateFormat", "yyyy-MM-dd HH:mm:ss")));
this.setAnnotationIntrospector(new JacksonAnnotationIntrospector() {
private static final long serialVersionUID = 1L;
@Override
public Object findSerializer(Annotated a) {
if (a instanceof AnnotatedMethod) {
AnnotatedElement m = a.getAnnotated();
JsonFormat jf = m.getAnnotation(JsonFormat.class);
if (jf != null) {
return new JsonSerializer<Date>(){
@Override
public void serialize(Date value, JsonGenerator jgen,
SerializerProvider provider) throws IOException, JsonProcessingException {
if (value != null){
jgen.writeString(DateUtils.formatDate(value, jf.pattern()));
}
}
};
}
}
return super.findSerializer(a);
}
});
// 设置输入时忽略在JSON字符串中存在但Java对象实际没有的属性
this.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
// 遇到空值处理为空串
@@ -69,19 +102,6 @@ public class JsonMapper extends ObjectMapper {
jgen.writeString(StringUtils.EMPTY);
}
});
// // 统一默认Date类型转换格式。如果设置，Bean中的@JsonFormat将失效
// final String dataFormat = Global.getProperty("json.mapper.dataFormat");
// if (StringUtils.isNotBlank(dataFormat)){
// this.registerModule(new SimpleModule().addSerializer(Date.class, new JsonSerializer<Date>(){
// @Override
// public void serialize(Date value, JsonGenerator jgen,
// SerializerProvider provider) throws IOException, JsonProcessingException {
// if (value != null){
// jgen.writeString(DateUtils.formatDate(value, dataFormat));
// }
// }
// }));
// }
// // 进行HTML解码（先注释掉，否则会造成XSS攻击，比如菜单名称里输入<script>alert(123)</script>转josn后就会还原这个编码 ，并在浏览器中运行）。
// this.registerModule(new SimpleModule().addSerializer(String.class, new JsonSerializer<String>(){
// @Override