package com.test;import java.io.BufferedReader;import java.io.DataOutputStream;import java.io.IOException;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.URL;import java.util.HashMap;import java.util.Map;import net.sf.json.JSONObject;/** * java访问webserviceUrl */public class WebserviceUrlAccess {    // login后保存返回的cookie,供下次连接时使用    private String responseCookie;    /**     * 根据用户名密码登录远程webserviceUrl     */    public String login(String url, String jsonParam) {        // 声明返回结果        String result = "";        BufferedReader reader = null;        DataOutputStream out = null;        try {            URL postUrl = new URL(url);            HttpURLConnection connection = (HttpURLConnection) postUrl.openConnection();            connection.setDoOutput(true);            connection.setDoInput(true);            connection.setRequestMethod("POST"); // 设置访问类型            connection.setUseCaches(false);            connection.setInstanceFollowRedirects(true);            connection.setRequestProperty("Content-Type", "application/json"); // 设置参数类型            connection.setRequestProperty("Connection", "Keep-Alive");            connection.connect();            out = new DataOutputStream(connection.getOutputStream());            out.writeBytes(jsonParam);            out.flush();            out.close();            reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));// 设置返回数据编码            responseCookie = connection.getHeaderField("Set-Cookie");// 取到所用的Cookie            // 读取返回结果            String line;            while ((line = reader.readLine()) != null) {                result += line;            }            reader.close();            connection.disconnect();        } catch (IOException e) {            e.printStackTrace();        } finally {            try {                if (out != null) {                    out.close();                }            } catch (Exception e) {                e.printStackTrace();            }            try {                if (reader != null) {                    reader.close();                }            } catch (Exception e) {                e.printStackTrace();            }        }        return result;    }    /**     * 登录远程webserviceUrl后,进行查询操作     */    public String searchData(String url, String jsonParam) {        // 声明返回结果        String result = "";        BufferedReader reader = null;        DataOutputStream out = null;        try {            URL postUrl = new URL(url);            HttpURLConnection connection = (HttpURLConnection) postUrl.openConnection();            connection.setRequestProperty("Cookie", responseCookie); // 设置login时返回的cookie            connection.setDoOutput(true);            connection.setDoInput(true);            connection.setRequestMethod("POST");            connection.setUseCaches(false);            connection.setInstanceFollowRedirects(true);            connection.setRequestProperty("Content-Type", "application/json");            connection.connect();            out = new DataOutputStream(connection.getOutputStream());            out.writeBytes(jsonParam);            out.flush();            out.close();            reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));// 设置返回数据编码            String line;            while ((line = reader.readLine()) != null) {                result += line;            }            reader.close();            connection.disconnect();        } catch (IOException e) {            e.printStackTrace();        } finally {            try {                if (out != null) {                    out.close();                }            } catch (Exception e) {                e.printStackTrace();            }            try {                if (reader != null) {                    reader.close();                }            } catch (Exception e) {                e.printStackTrace();            }        }        return result;    }    /**     * 使用示例     */    public static void main(String[] args) {        WebserviceUrlAccess access = new WebserviceUrlAccess();        // login        String loginUrl = "webserviceUrl地址";        Map<String, Object> loginParam = new HashMap<String, Object>();        loginParam.put("user", "登录名"); // 需根据接口实际需要的参数而定        loginParam.put("password", "登录密码");// 需根据接口实际需要的参数而定        String loginJsonParam = JSONObject.fromObject(loginParam).toString();        String resultLogin = access.login(loginUrl, loginJsonParam);        // searchData        String searchUrl = "webserviceUrl地址";        Map<String, Object> searchParam = new HashMap<String, Object>();        searchParam.put("fileds", "属性名");// 需根据接口实际需要的参数而定        searchParam.put("date", "日期");// 需根据接口实际需要的参数而定        String searchJsonParam = JSONObject.fromObject(searchParam).toString();        String resultSearch = access.searchData(searchUrl, searchJsonParam);    }}