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JsonMapper日期类型转换代码优化

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thinkgem
2025-05-24 18:42:19 +08:00
parent a35d4654f5
commit b5bde1e58c
2 changed files with 51 additions and 35 deletions
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84
common/src/main/java/com/jeesite/common/mapper/JsonMapper.java
View File

@@ -11,6 +11,7 @@ import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonParser.Feature;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.introspect.Annotated;
import com.fasterxml.jackson.databind.introspect.AnnotatedClass;
import com.fasterxml.jackson.databind.introspect.AnnotatedMethod;
import com.fasterxml.jackson.databind.introspect.JacksonAnnotationIntrospector;
import com.fasterxml.jackson.databind.module.SimpleModule;
@@ -49,9 +50,9 @@ public class JsonMapper extends ObjectMapper {
private static final class JsonMapperHolder {
private static final JsonMapper INSTANCE = new JsonMapper();
}
public JsonMapper() {
// 设置默认时区、默认日期格式
// 日志类型格式化处理
this.setLocaleTimeZoneDateFormat();
// 为Null时不序列化
this.setSerializationInclusion(Include.NON_NULL);
@@ -68,7 +69,7 @@ public class JsonMapper extends ObjectMapper {
}
/**
* 设置默认时区、默认日期格式
* 日志类型格式化处理
* @author ThinkGem
*/
public JsonMapper setLocaleTimeZoneDateFormat(){
@@ -78,32 +79,52 @@ public class JsonMapper extends ObjectMapper {
.getProperty("lang.defaultTimeZone", "GMT+08:00")));
this.setAnnotationIntrospector(new JacksonAnnotationIntrospector() {
private static final long serialVersionUID = 1L;
private final String[] pattern = new String[] {"yyyy", "MM", "dd", "HH", "mm", "ss", "SSS"};
class JeeSiteJsonSerializer extends JsonSerializer<Date> {
private final String pattern;
private JeeSiteJsonSerializer(String pattern) {
this.pattern = pattern;
}
@Override
public void serialize(Date value, JsonGenerator gen, SerializerProvider provider) throws IOException {
if (value != null){
if (StringUtils.isNotBlank(pattern)) {
gen.writeString(DateUtils.formatDate(value, pattern));
} else {
gen.writeString(DateUtils.formatDateTime(value));
}
}
}
}
class JeeSiteJsonDeserializer extends JsonDeserializer<Date> {
private final String pattern;
private JeeSiteJsonDeserializer(String pattern) {
this.pattern = pattern;
}
@Override
public Date deserialize(JsonParser parser, DeserializationContext context) throws IOException {
if (StringUtils.isNotBlank(pattern)) {
return DateUtils.parseDate(parser.getText(), pattern);
} else {
return DateUtils.parseDate(parser.getText());
}
}
}
@Override
public Object findSerializer(Annotated a) {
if (a instanceof AnnotatedMethod) {
AnnotatedElement m = a.getAnnotated();
JsonFormat jf = m.getAnnotation(JsonFormat.class);
if (jf != null && StringUtils.containsAnyIgnoreCase(jf.pattern(),
"yyyy", "MM", "dd", "HH", "mm", "ss", "SSS")) {
return new JsonSerializer<Date>(){
@Override
public void serialize(Date value, JsonGenerator jgen, SerializerProvider provider) throws IOException {
if (value != null){
jgen.writeString(DateUtils.formatDate(value, jf.pattern()));
}
}
};
if (jf != null && StringUtils.containsAnyIgnoreCase(jf.pattern(), pattern)) {
return new JeeSiteJsonSerializer(jf.pattern());
}
AnnotatedMethod am = (AnnotatedMethod) a;
if (am.getRawReturnType() == Date.class) {
return new JsonSerializer<Date>(){
@Override
public void serialize(Date value, JsonGenerator jgen, SerializerProvider provider) throws IOException {
if (value != null){
jgen.writeString(DateUtils.formatDateTime(value));
}
}
};
return new JeeSiteJsonSerializer(null);
}
} else if (a instanceof AnnotatedClass) {
if (a.getRawType() == Date.class) {
return new JeeSiteJsonSerializer(null);
}
}
return super.findSerializer(a);
@@ -113,23 +134,16 @@ public class JsonMapper extends ObjectMapper {
if (a instanceof AnnotatedMethod) {
AnnotatedElement m = a.getAnnotated();
JsonFormat jf = m.getAnnotation(JsonFormat.class);
if (jf != null && StringUtils.containsAnyIgnoreCase(jf.pattern(),
"yyyy", "MM", "dd", "HH", "mm", "ss", "SSS")) {
return new JsonDeserializer<Date>(){
@Override
public Date deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
return DateUtils.parseDate(p.getText(), jf.pattern());
}
};
if (jf != null && StringUtils.containsAnyIgnoreCase(jf.pattern(), pattern)) {
return new JeeSiteJsonDeserializer(jf.pattern());
}
AnnotatedMethod am = (AnnotatedMethod) a;
if (am.getParameterCount() > 0 && am.getParameterType(0).getRawClass() == Date.class) {
return new JsonDeserializer<Date>(){
@Override
public Date deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
return DateUtils.parseDate(p.getText());
}
};
return new JeeSiteJsonDeserializer(null);
}
} else if (a instanceof AnnotatedClass) {
if (a.getRawType() == Date.class) {
return new JeeSiteJsonDeserializer(null);
}
}
return super.findDeserializer(a);

2
common/src/test/java/com/jeesite/test/mapper/JsonMapperTest.java
View File

@@ -8,6 +8,7 @@ import com.jeesite.common.collect.ListUtils;
import com.jeesite.common.collect.MapUtils;
import com.jeesite.common.mapper.JsonMapper;
import java.util.Date;
import java.util.List;
import java.util.Map;
@@ -30,6 +31,7 @@ public class JsonMapperTest {
map.put("pId", 1);
map.put("name", "你好");
map.put("open", true);
map.put("date", new Date());
list.add(map);
String json = JsonMapper.toJson(list);
System.out.println(json);