Gson：Java格式化Json

gson依赖类库：
http://code.google.com/p/google-gson/downloads/detail?name=google-gson-2.2.4-release.zip&can=2&q=

示例：

package com.javaer.tools.formatter;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonElement;
import com.google.gson.JsonParser;
/**
 * @author henrypoter
 * 
 */
public class JsonFormatter {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		String uglyJSONString = "{\"data1\":100,\"data2\":\"hello\",\"list\":[\"String 1\",\"String 2\",\"String 3\"]}";
		String prettyJsonString = jsonFormatter(uglyJSONString);
		System.out.println("JSON格式化前：");
		System.out.println(uglyJSONString);
		System.out.println("JSON格式化后：");
		System.out.println(prettyJsonString);

	}
	
	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;
	}

}

输出结果:

JSON格式化前：
{"data1":100,"data2":"hello","list":["String 1","String 2","String 3"]}
JSON格式化后：
{
  "data1": 100,
  "data2": "hello",
  "list": [
    "String 1",
    "String 2",
    "String 3"
  ]
}