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1.5.0-jre8

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yexuejc-vm-win10
2022-05-09 17:11:14 +08:00
parent 6ff859b4fb
commit 933eacc1c2
5 changed files with 103 additions and 55 deletions
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34
src/main/java/com/yexuejc/base/util/JsonUtil.java
View File

@@ -1,9 +1,11 @@
package com.yexuejc.base.util;
import com.fasterxml.jackson.annotation.JsonInclude.Include;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.type.MapType;
@@ -42,7 +44,7 @@ public class JsonUtil {
* @param objectMapper
*/
private static void initDefaultObjectMapper(ObjectMapper objectMapper) {
objectMapper.setSerializationInclusion(Include.NON_NULL);
objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
objectMapper.configure(JsonParser.Feature.ALLOW_SINGLE_QUOTES, true);
objectMapper.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
@@ -55,16 +57,17 @@ public class JsonUtil {
//TODO 待优化
public static void initSnakeCase() {
//驼峰下划线互转
objectMapper.setPropertyNamingStrategy(PropertyNamingStrategy.SNAKE_CASE);
objectMapper.setPropertyNamingStrategy(PropertyNamingStrategies.SNAKE_CASE);
}
/**
* 这个设置不能改变JsonUtil自带的objectMapper设置，只能修改传入objMapper的设置
*
* @param objMapper
*/
public static void initSnakeCase(ObjectMapper objMapper) {
//驼峰下划线互转
objMapper.setPropertyNamingStrategy(PropertyNamingStrategy.SNAKE_CASE);
objMapper.setPropertyNamingStrategy(PropertyNamingStrategies.SNAKE_CASE);
}
/**
@@ -144,8 +147,7 @@ public class JsonUtil {
*/
public static <T> T json2Obj(String json, Class<T> parametrized, Class<?>... parameterClasses) {
T pojo = null;
JavaType javaType = objectMapper.getTypeFactory().constructParametrizedType(parametrized, parametrized,
parameterClasses);
JavaType javaType = objectMapper.getTypeFactory().constructParametricType(parametrized, parameterClasses);
try {
pojo = objectMapper.readValue(json, javaType);
} catch (JsonParseException e) {
@@ -186,26 +188,18 @@ public class JsonUtil {
/**
* Json字符串转换为Java-Map对象
*
* @param json 字符串
* @param mapClass Map 继承类
* @param keyType Key 类
* @param valueType Value 类
* @param json 字符串
* @param javaType 具体的java类型
* @param <T>
* @return
*/
public static <T> T json2Obj(String json, Class<? extends Map> mapClass, JavaType keyType, JavaType valueType) {
T pojo = null;
MapType mapType = objectMapper.getTypeFactory().constructMapType(mapClass, keyType, valueType);
public static <T extends Object> T json2Obj(String json, TypeReference<T> javaType) {
try {
pojo = objectMapper.readValue(json, mapType);
} catch (JsonParseException e) {
return objectMapper.readValue(json, javaType);
} catch (JsonProcessingException e) {
log.warning("json to Object JsonParseException.\n" + e.getMessage());
} catch (JsonMappingException e) {
log.warning("json to Object JsonMappingException.\n" + e.getMessage());
} catch (IOException e) {
log.warning("json to Object IOException.\n" + e.getMessage());
}
return pojo;
return null;
}
/**

27
src/test/java/com/yexuejc/base/util/JsonUtilTest.java
View File

@@ -1,5 +1,7 @@
package com.yexuejc.base.util;
import com.fasterxml.jackson.core.type.TypeReference;
import org.junit.jupiter.api.Test;
import java.io.Serializable;
import java.util.ArrayList;
@@ -7,7 +9,27 @@ import java.util.List;
import java.util.Map;
public class JsonUtilTest {
public static void main(String[] args) {
@Test
public void test2() {
// TestA testA = new TestA("张三", 1, false);
// List<TestA> list = new ArrayList<>();
// list.add(testA);
// list.add(testA);
// Map<String, List<TestA>> data = new HashMap<>();
// data.put("data",list);
// System.out.println(JsonUtil.obj2Json(data));
// System.out.println("===========================");
String readData="{\"data\":[{\"name\":\"张三\",\"id\":1,\"sex\":false},{\"name\":\"张三\",\"id\":1,\"sex\":false}]}";
Map<String, List<TestA>> map = JsonUtil.json2Obj(readData, new TypeReference<Map<String, List<TestA>>>() {
});
System.out.println(JsonUtil.obj2Json(map));
List<TestA> testAS = map.get("data");
System.out.println(testAS.getClass().toString());
System.out.println(testAS.get(0).getClass().toString());
}
@Test
public void test1() {
TestA testA = new TestA("张三", 1, false);
System.out.println(JsonUtil.json2Obj(JsonUtil.obj2Json(testA), Map.class));
@@ -15,7 +37,7 @@ public class JsonUtilTest {
list.add(testA);
list.add(testA);
list.add(testA);
System.out.println(JsonUtil.json2Obj(JsonUtil.obj2Json(list), List.class,TestA.class));
System.out.println(JsonUtil.json2Obj(JsonUtil.obj2Json(list), List.class, TestA.class));
}
static class TestA implements Serializable {
@@ -32,5 +54,4 @@ public class JsonUtilTest {
this.sex = sex;
}
}
}