Java中如何操作JSON格式的字符串

1. 首先需要一个类支持 JSONObject类,该类需要外部JAR包支持,下面是下载地址

　 jettison-1.0.jar包下载地址：http://www.kuaipan.cn/file/id_21487635482542624.htm

 

2. 下面在代码中演示如何用

import org.codehaus.jettison.json.JSONException;
import org.codehaus.jettison.json.JSONObject;

public class HelloWorldTest {
    public static void main(String[] args) {
        String jsonStr = "{\"b_action\":\"xts.run\",\"m\":\"portal/report-viewer.xts\",\"method\":\"execute\","
                + "\"ui.action\":\"run\",\"ui.tool\":\"CognosViewer\",\"ui.object\":\"/content/package[@name='zjfx_bdgc']/report[@name='a']\","
                + "\"ZTBM\":\"000010000200001000010000100001\",\"MBBM\":\"001\",\"p_d\":\"2011010000100001\","
                + "\"run.prompt\":\"false\",\"ZBYQ_DJ\":\"1111\",\"BDGC_DYDJ\":\"22222\",\"BDGC_JSXZ\":\"01\","
                + "\"JSZB_BDZXS\":\"01,02,03\",\"PDXS_GYC_PDZZXH\":\"02\",\"ZBYQ_BQTS1\":\"1\",\"ZBYQ_BQTS2\":\"2\","
                + "\"ZBYQ_DTRL1\":\"3\",\"ZBYQ_DTRL2\":\"4\",\"JGJS_JTTZ1\":\"5\","
                + "\"JGJS_JTTZ2\":\"6\",\"btnsearch\":\"查询\",\"btnreset\":\"重置\"}";
        
        try {
            JSONObject obj = new JSONObject(jsonStr);
            String b_action = (String)obj.get("b_action");
            System.out.println(b_action);
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }
}