JSON文件编辑

import java.io.File;

import java.io.IOException;

import java.util.HashMap;

import java.util.Map;

import org.apache.commons.io.FileUtils;

import org.apache.commons.lang.StringUtils;

import com.alibaba.fastjson.JSON;

import com.alibaba.fastjson.JSONArray;

import com.alibaba.fastjson.JSONObject;

import com.google.gson.Gson;

import com.google.gson.GsonBuilder;

import com.google.gson.JsonElement;

import com.google.gson.JsonParser;

public class JSONDataUtils {

public static void edit(String f_json,String field,String fvalue,Map<String,Object> editData)

{

String jsonList = "";

try {

jsonList = org.apache.commons.io.FileUtils.readFileToString(new File(f_json),"utf-8");

JSONObject data = JSON.parseObject(jsonList);

JSONArray ja = data.getJSONArray("rows");

int len = ja.size();

for(int i = 0;i<len;i++)

{

JSONObject jo = ja.getJSONObject(i);

if(jo.getString(field).equals(fvalue))

{

System.out.println("修改前\t"+jo.toJSONString());

for(String key:editData.keySet())

{

jo.put(key, editData.get(key));

}

ja.set(i, jo);

System.out.println("修改后\t"+editData);

System.out.println("修改后\t"+jo.toJSONString());

System.out.println("修改后\t"+ja.getJSONObject(i).toJSONString());

}

}

data.put("rows", ja);

FileUtils.writeStringToFile(new File(f_json), jsonFormatter(data.toJSONString()),"utf-8");

} catch (IOException e) {

System.out.println(jsonFormatter(jsonList));

e.printStackTrace();

}

}

public static void add(String f_json,Map<String,String> addData)

{

String jsonList = "";

try {

jsonList = org.apache.commons.io.FileUtils.readFileToString(new File(f_json),"utf-8");

JSONObject data = JSON.parseObject(jsonList);

JSONArray ja = data.getJSONArray("rows");

ja.add(0,addData);

data.put("rows", ja);

data.put("total", data.getInteger("total")+1);

FileUtils.writeStringToFile(new File(f_json), jsonFormatter(data.toJSONString()),"utf-8");

} catch (IOException e) {

System.out.println(jsonFormatter(jsonList));

e.printStackTrace();

}

}

public static void del(String f_json,String field,String fvalue)

{

String jsonList = "";

try {

jsonList = org.apache.commons.io.FileUtils.readFileToString(new File(f_json),"utf-8");

JSONObject data = JSON.parseObject(jsonList);

JSONArray ja = data.getJSONArray("rows");

int len = ja.size();

for(int i = 0;i<len;i++)

{

JSONObject jo = ja.getJSONObject(i);

if(jo.getString(field).equals(fvalue))

{

ja.remove(jo);

len -=1;

}

}

//System.out.println(ja.toJSONString());

data.put("rows", ja);

data.put("total", data.getInteger("total")-1);

//System.out.println(data.toJSONString());

FileUtils.writeStringToFile(new File(f_json), jsonFormatter(data.toJSONString()),"utf-8");

} catch (IOException e) {

System.out.println(jsonFormatter(jsonList));

e.printStackTrace();

}

}

public static void batDel(String f_json,String field,String fvalues)

{

String jsonList = "";

try {

jsonList = org.apache.commons.io.FileUtils.readFileToString(new File(f_json),"utf-8");

JSONObject data = JSON.parseObject(jsonList);

JSONArray ja = data.getJSONArray("rows");

int len = ja.size();

String[] fv = fvalues.split(",");

System.out.println(fvalues);

for(int i = 0;i<len;i++)

{

JSONObject jo = ja.getJSONObject(i);

for(String fvalue:fv)

{

if(StringUtils.isBlank(fvalue)

||StringUtils.isEmpty(fvalue))

{

continue;

}

if(jo.getString(field).equals(fvalue))

{

ja.remove(jo);

len -= 1;

System.out.println("删除一条");

}

}

}

//System.out.println(ja.toJSONString());

data.put("rows", ja);

data.put("total", data.getInteger("total")-fv.length);

//System.out.println(data.toJSONString());

FileUtils.writeStringToFile(new File(f_json), jsonFormatter(data.toJSONString()),"utf-8");

} catch (IOException e) {

System.out.println(jsonFormatter(jsonList));

e.printStackTrace();

}

}

@SuppressWarnings({ "unchecked", "static-access" })

public static Map<String,String> find(String f_json,String field,String fvalue)

{

String jsonList = "";

try {

jsonList = org.apache.commons.io.FileUtils.readFileToString(new File(f_json),"utf-8");

JSONObject data = JSON.parseObject(jsonList);

JSONArray ja = data.getJSONArray("rows");

int len = ja.size();

for(int i = 0;i<len;i++)

{

JSONObject jo = ja.getJSONObject(i);

if(jo.getString(field).equals(fvalue))

{

return jo.parseObject(jo.toJSONString(), HashMap.class);

}

}

} catch (IOException e) {

System.out.println(jsonFormatter(jsonList));

e.printStackTrace();

}

return new HashMap<String, String>();

}

public static Integer findInteger(String f_json,String field,String fvalue,String ffield)

{

String jsonList = "";

try {

jsonList = org.apache.commons.io.FileUtils.readFileToString(new File(f_json),"utf-8");

JSONObject data = JSON.parseObject(jsonList);

JSONArray ja = data.getJSONArray("rows");

int len = ja.size();

for(int i = 0;i<len;i++)

{

JSONObject jo = ja.getJSONObject(i);

if(jo.getString(field).equals(fvalue))

{

return jo.getInteger(ffield);

}

}

} catch (IOException e) {

System.out.println(jsonFormatter(jsonList));

e.printStackTrace();

}

return 0;

}

public static String findStr(String f_json,String field,String fvalue,String ffield)

{

String jsonList = "";

try {

jsonList = org.apache.commons.io.FileUtils.readFileToString(new File(f_json),"utf-8");

JSONObject data = JSON.parseObject(jsonList);

JSONArray ja = data.getJSONArray("rows");

int len = ja.size();

for(int i = 0;i<len;i++)

{

JSONObject jo = ja.getJSONObject(i);

if(jo.getString(field).equals(fvalue))

{

return jo.getString(ffield);

}

}

} catch (IOException e) {

System.out.println(jsonFormatter(jsonList));

e.printStackTrace();

}

return "";

}

/**

* 

* @author 王乾

* @comments 格式化至可视模式

* @time 2015-11-4上午11:25:19

* @param uglyJSONString

* @return 

* @returnType String

* @modification

*/

public static String jsonFormatter(String uglyJSONString){

        Gson gson = new GsonBuilder().setPrettyPrinting().create();

        JsonParser jp = new JsonParser();

        JsonElement je = jp.parse(uglyJSONString);

        String prettyJsonString = gson.toJson(je);

        return prettyJsonString;

    }

public static void main(String[] args) {

String f_json = "D:\\workspaces\\demo\\WebRoot\\data\\bgs\\txl.json";

// Map<String,Object> editData = new HashMap<String, Object>();

// editData.put("txlstatu", "同意修改");

// JSONDataUtils.edit(f_json, "id", "txl-00001",editData);

// editData.put("id", "txl-00011");

// JSONDataUtils.add(f_json, editData);

// editData.put("id", "txl-00012");

// JSONDataUtils.add(f_json, editData);

// JSONDataUtils.del(f_json, "id", "txl-00012");

// JSONDataUtils.batDel(f_json, "id", "txl-00011,txl-00012");

System.out.println(JSONDataUtils.find(f_json, "id", "txl-00006"));

}

}