json格式字符串与java.util.Map的互转(借助于jackson.jar)

时间:2023-03-08 17:09:00
package com.test.javaAPI.json;

/**
* json工具类
*
* @author Wei
* @time 2016年10月2日 下午4:25:25
*/
public class UtilJackson {
public static String jsonStr = "{\"parameters\":{\"PI_CAE574\":\"20160908\",\"PI_JSRQ\":\"20160908\",\"Pi_CAE920\":\"301\",\"Pi_YAE601\":\"1\",\"PI_BAE001\":\"511502\",\"Pi_JFDX\":\"1\",\"\":\"pkg_weiyl.getMatchResult\"},\"serviceId\":\"directJdbcService\",\"method\":\"savePointProcedure\"}";
/**
* 比较复杂的json格式字符串
*/
public static String jsonStr_HN = "{\"DataPackage\":{\"JZZL\":[{\"CY\\\"BZ\":\"2\",\"CYQK\":\"\",\"CYRQ\":\"20090205\",\"CYZD\":\"霍乱\",\"CYZD1\":\"\",\"CYZDGJDM\":\"A00.901\",\"JZJLH\":\"136\",\"JZLB\":\"21\",\"RYRQ\":\"20090205\",\"RYZD\":\"霍乱\",\"RYZD1\":\"\",\"RYZDGJDM\":\"A00.901\",\"RYZS\":\"\",\"SSMC\":\"\",\"YYBH\":\"1000\",\"ZYH\":\"\",\"ZYJSLB\":\"1\"},{\"CYBZ\":\"2\",\"CYQK\":\"\",\"CYRQ\":\"20090202\",\"CYZD\":\"霍乱\",\"CYZD1\":\"\",\"CYZDGJDM\":\"A00.901\",\"JZJLH\":\"142\",\"JZLB\":\"21\",\"RYRQ\":\"20090201\",\"RYZD\":\"霍乱\",\"RYZD1\":\"\",\"RYZDGJDM\":\"A00.901\",\"RYZS\":\"\",\"SSMC\":\"\",\"YYBH\":\"1000\",\"ZYH\":\"\",\"ZYJSLB\":\"1\"},{\"CYBZ\":\"2\",\"CYQK\":\"\",\"CYRQ\":\"20090304\",\"CYZD\":\"霍乱\",\"CYZD1\":\"\",\"CYZDGJDM\":\"A00.901\",\"JZJLH\":\"132\",\"JZLB\":\"21\",\"RYRQ\":\"20090303\",\"RYZD\":\"霍乱\",\"RYZD1\":\"\",\"RYZDGJDM\":\"A00.901\",\"RYZS\":\"\",\"SSMC\":\"\",\"YYBH\":\"1000\",\"ZYH\":\"\",\"ZYJSLB\":\"1\"},{\"CYBZ\":\"2\",\"CYQK\":\"\",\"CYRQ\":\"20090306\",\"CYZD\":\"nihao\",\"CYZD1\":\"\",\"CYZDGJDM\":\"\",\"JZJLH\":\"140\",\"JZLB\":\"21\",\"RYRQ\":\"20090305\",\"RYZD\":\"nihao\",\"RYZD1\":\"\",\"RYZDGJDM\":\"\",\"RYZS\":\"\",\"SSMC\":\"\",\"YYBH\":\"1000\",\"ZYH\":\"\",\"ZYJSLB\":\"1\"}]},\"FunctionParams\":{\"FHZ\":\"1\",\"GET_PAGE_TOTAL\":\"4\",\"HAS_NEXT_REQUEST\":\"false\",\"MSG\":\"执行成功!\",\"SESSIONID\":\"QKSZPNrRPptTGs3ymqvJhQLZyxKJpd4XCHGJQBGFQcFQtwRYGvxS!306292812!1338878737991\"}}";
public static String jsonStr_KEY_DataPackage = "DataPackage";
public static String jsonStr_KEY_FunctionParams = "FunctionParams";
public static String jsonStr4 = "{\"verified\":false,\"name\":{\"last\":\"Hankcs\",\"first\":\"Joe\"},\"userImage\":\"Rm9vYmFyIQ==\",\"gender\":\"MALE\"}";
public static String jsonStr4_KEY1 = "verified";
}

  

package com.test.javaAPI.json;

import java.io.IOException;
import java.util.Map; import org.codehaus.jackson.JsonParseException;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;
import org.junit.Test; import com.sun.xml.internal.messaging.saaj.util.ByteOutputStream; public class JacksonTest {
public static void main(String[] args) throws JsonParseException, JsonMappingException, IOException {
// ObjectMapper objMap = new ObjectMapper();
// // Map map = objMap.readValue(UtilJackson.jsonStr, Map.class);
// Map map = objMap.readValue(UtilJackson.jsonStr_HN, Map.class);
// System.out.println(map.toString());
// Set set = map.keySet();
// Iterator it = set.iterator();
// while (it.hasNext()) {
// Object key = (Object) it.next();
// Object value = map.get(key);
// System.out.println("key:" + key + ",value:" + value);
// } // new JacksonTest().removeDataPackage("DataPackage");
String str = new JacksonTest().removeJsonObjByKey(UtilJackson.jsonStr4,
UtilJackson.jsonStr4_KEY1);
System.out.println(str);
} /**
* 方法的作用:去除一个json格式字符串的某一个key 删除 这个json字符串里的这个key对应的对象 该方法与框架中的 String
* cn.sinobest.framework.web.his.JsonManager.removeDataPackage(String
* jsonStr) 这个方法的功能一致
*
* @param jsonKey
* @return
* @throws JsonParseException
* @throws JsonMappingException
* @throws IOException
*/
@Test
public String removeDataPackage(String jsonKey) throws JsonParseException, JsonMappingException, IOException {
ObjectMapper objMap = new ObjectMapper();
Map map = objMap.readValue(UtilJackson.jsonStr_HN, Map.class);
// map.remove("DataPackage");
map.remove(jsonKey);
ByteOutputStream bops = new ByteOutputStream();
objMap.writeValue(bops, map);
System.out.println(bops.toString());
return null;
} /**
*
* @param jsonStr
* @param key
* @return
* @throws IOException
* @throws JsonMappingException
* @throws JsonParseException
*/
public String removeJsonObjByKey(String jsonStr, String key)
throws JsonParseException, JsonMappingException, IOException {
ObjectMapper objMap = new ObjectMapper();
// 1 把json格式字符串转换为 java.util.Map
Map map = objMap.readValue(jsonStr, Map.class);
// 2 删除map中的对应key的项目
map.remove(key);
// 准备字节流,接收ObjectMapper中写出的输出流
ByteOutputStream bops = new ByteOutputStream();
// 3 把map重新转换为json格式字符串
objMap.writeValue(bops, map);
if (!"".equals(bops)) {
return bops.toString();
}
return "";
} }

  

控制台输出:

{"name":{"last":"Hankcs","first":"Joe"},"userImage":"Rm9vYmFyIQ==","gender":"MALE"}

http://tool.oschina.net/codeformat/json 这个json字符串格式化工具格式化后的效果:

json格式字符串与java.util.Map的互转(借助于jackson.jar)

{json格式字符串与java.util.Map的互转(借助于jackson.jar)
"name": {json格式字符串与java.util.Map的互转(借助于jackson.jar)
"last": "Hankcs",
"first": "Joe"
},
"userImage": "Rm9vYmFyIQ==",
"gender": "MALE"
}