java根据isbn编码获取书籍信息（附赠http url的util包）
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controller代码：
/** * 测试 * * */ @RequestMapping(value = "/test", method = RequestMethod.POST) public JsonResult test() { String url="https://api.douban.com/v2/book/isbn/:"+"9787115417305"; String result = HttpUtil.post(url, "", null, "GBK"); String url1="http://jisuisbn.market.alicloudapi.com/isbn/query?isbn="+"9787212058937"; String result1 = HttpUtil.get1(url1, null, "GBK"); Map<String, Object> map = new HashMap<>(); map.put("result", result); map.put("result1", result1); return new JsonResult(ResultCode.SUCCESS, "检测成功",map); }自定义httpUtil包：
package com.datebook.util;import java.io.IOException;import java.io.InputStream;import java.io.StringReader;import java.util.ArrayList;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.regex.Matcher;import java.util.regex.Pattern;import java.util.zip.GZIPInputStream;import org.apache.http.Header;import org.apache.http.HeaderElement;import org.apache.http.HttpEntity;import org.apache.http.HttpException;import org.apache.http.HttpRequest;import org.apache.http.HttpRequestInterceptor;import org.apache.http.HttpResponse;import org.apache.http.HttpResponseInterceptor;import org.apache.http.NameValuePair;import org.apache.http.client.HttpClient;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.HttpGet;import org.apache.http.client.methods.HttpPost;import org.apache.http.client.params.ClientPNames;import org.apache.http.entity.HttpEntityWrapper;import org.apache.http.entity.StringEntity;import org.apache.http.entity.mime.MultipartEntity;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.impl.conn.PoolingClientConnectionManager;import org.apache.http.message.BasicNameValuePair;import org.apache.http.params.HttpParams;import org.apache.http.protocol.HTTP;import org.apache.http.protocol.HttpContext;import org.apache.http.util.EntityUtils;public class HttpUtil { private static HashMap<String, HttpClient> sessionMap = new HashMap<String, HttpClient>(); public HttpUtil() { } /* * 将形如“\u7cfb\u7edf\u7e41\u5fd9\uff0c\u8bf7\u7a0d\u540e\u518d\u8bd5\u3002”的字符串解码 */ public static String decode(String s) { StringReader s1 = new StringReader(s); try { char[] chars = new char[s.length()]; s1.read(chars); return new String(chars); } catch (Exception ex) { } return null; } /** * get httpGet * * @param url * String * @param name * String 连接名称，用以维护session,不需要维持连接时请置null，操作结束后请调用destroy方法 * @param charset * String * @return String */ public static String get(String url, String name, String charset) { if (charset == null) charset = HTTP.UTF_8; try { HttpClient httpclient; if (name == null) { // 不需要维持连接 httpclient = createHttpClient(); } else if (sessionMap.containsKey(name)) { httpclient = sessionMap.get(name); } else { httpclient = createHttpClient(); sessionMap.put(name, httpclient); } HttpGet httpget1 = new HttpGet(url); // httpget1.addHeader("Authorization", // "OAuth oauth_consumer_key=\"450215437\",oauth_nonce=\"SThfUW\",oauth_signature_method=\"HMAC-SHA1\",oauth_timestamp=\"1386241655\",oauth_version=\"1.0\",x_auth_mode=\"client_auth\",x_auth_password=\"a77a125\",x_auth_username=\"450215437\",oauth_signature=\"2s6KCmXhuUgDAyl8gc/HMkT/dPY=\""); HttpResponse response1 = httpclient.execute(httpget1); HttpEntity entity1 = response1.getEntity(); return EntityUtils.toString(entity1, charset); } catch (Exception e) { e.printStackTrace(); } return null; } public static String get1(String url, String name, String charset) { if (charset == null) charset = HTTP.UTF_8; try { HttpClient httpclient; if (name == null) { // 不需要维持连接 httpclient = createHttpClient(); } else if (sessionMap.containsKey(name)) { httpclient = sessionMap.get(name); } else { httpclient = createHttpClient(); sessionMap.put(name, httpclient); } HttpGet httpget1 = new HttpGet(url); // httpget1.addHeader("Authorization", // "OAuth oauth_consumer_key=\"450215437\",oauth_nonce=\"SThfUW\",oauth_signature_method=\"HMAC-SHA1\",oauth_timestamp=\"1386241655\",oauth_version=\"1.0\",x_auth_mode=\"client_auth\",x_auth_password=\"a77a125\",x_auth_username=\"450215437\",oauth_signature=\"2s6KCmXhuUgDAyl8gc/HMkT/dPY=\""); httpget1.addHeader("Authorization", "APPCODE 089d4879c794479fae61ad0784cd41c0"); HttpResponse response1 = httpclient.execute(httpget1); HttpEntity entity1 = response1.getEntity(); return EntityUtils.toString(entity1, charset); } catch (Exception e) { e.printStackTrace(); } return null; } public static String getJuhe(String url, String name, String charset) { if (charset == null) charset = HTTP.UTF_8; // Hm_lvt_4d698a59cb2f4880202bc924e8364d90=1358670422; // Hm_lpvt_4d698a59cb2f4880202bc924e8364d90=1358670433; // PHPSESSID=r1pgkduu079mirjcdukd1s22i7 try { HttpClient httpclient; if (name == null) { // 不需要维持连接 httpclient = createHttpClientJuhe(); } else if (sessionMap.containsKey(name)) { httpclient = sessionMap.get(name); } else { httpclient = createHttpClientJuhe(); sessionMap.put(name, httpclient); } HttpGet httpget1 = new HttpGet(url); HttpResponse response1 = httpclient.execute(httpget1); HttpEntity entity1 = response1.getEntity(); return EntityUtils.toString(entity1, charset); } catch (Exception e) { e.printStackTrace(); } return null; } /** * post * * @param url * String * @param map * HashMap 提交表单的键值对 * @param name * String 连接名称，用以维护session * @param charset * String * @return String */ public static String post(String url, HashMap<String, String> map,String name, String charset) { if (charset == null) charset = HTTP.UTF_8; try { HttpClient httpclient; if (name == null) { // 不需要维持连接 httpclient = createHttpClient(); } else if (sessionMap.containsKey(name)) { httpclient = sessionMap.get(name); } else { httpclient = createHttpClient(); sessionMap.put(name, httpclient); } HttpPost httpost = new HttpPost(url);// httpost.addHeader("Content-Type", "application/x-www-form-urlencoded; charset=" + charset); List<NameValuePair> nvps = new ArrayList<NameValuePair>(); if (map != null) { Iterator it = map.keySet().iterator(); while (it.hasNext()) { String key = (String) it.next(); nvps.add(new BasicNameValuePair(key, map.get(key))); } } httpost.setEntity(new UrlEncodedFormEntity(nvps, charset)); // System.out.println("!!!!!!!!!!!!!!!"); // long s=System.currentTimeMillis(); HttpResponse response = httpclient.execute(httpost); // System.out.println((System.currentTimeMillis()-s)/1000); HttpEntity entity1 = response.getEntity(); // entity1.consumeContent(); return EntityUtils.toString(entity1, charset); } catch (Exception e) { e.printStackTrace(); } return null; } public static String postFile(String url, MultipartEntity entity, String name, String charset) { if (charset == null) charset = HTTP.UTF_8; try { HttpClient httpclient; if (name == null) { // 不需要维持连接 httpclient = createHttpClient(); } else if (sessionMap.containsKey(name)) { httpclient = sessionMap.get(name); } else { httpclient = createHttpClient(); sessionMap.put(name, httpclient); } HttpPost httpost = new HttpPost(url); httpost.setEntity(entity); // System.out.println("!!!!!!!!!!!!!!!"); // long s=System.currentTimeMillis(); HttpResponse response = httpclient.execute(httpost); // System.out.println((System.currentTimeMillis()-s)/1000); HttpEntity entity1 = response.getEntity(); // entity1.consumeContent(); return EntityUtils.toString(entity1, charset); } catch (Exception e) { e.printStackTrace(); } return null; } public static String post(String url, String content, String name,String charset) { if (charset == null) charset = HTTP.UTF_8; try { HttpClient httpclient; if (name == null) { // 不需要维持连接 httpclient = createHttpClient(); } else if (sessionMap.containsKey(name)) { httpclient = sessionMap.get(name); } else { httpclient = createHttpClient(); sessionMap.put(name, httpclient); } HttpPost httpost = new HttpPost(url); if (content != null) { httpost.setEntity(new StringEntity(content, charset)); } HttpResponse response = httpclient.execute(httpost); HttpEntity entity1 = response.getEntity(); // entity1.consumeContent(); return EntityUtils.toString(entity1, charset); } catch (Exception e) { e.printStackTrace(); } return null; } public static String post2(String url, String content, String name,String charset) { if (charset == null) charset = HTTP.UTF_8; System.out.println("-----------------post2"); try { HttpClient httpclient; if (name == null) { // 不需要维持连接 httpclient = createHttpClient(); } else if (sessionMap.containsKey(name)) { httpclient = sessionMap.get(name); } else { httpclient = createHttpClient(); sessionMap.put(name, httpclient); } HttpPost httpost = new HttpPost(url); httpost.addHeader("Accept", "*/*"); httpost.addHeader("Content-Type", "application/x-www-form-urlencoded; charset=" + charset); if (content != null) { httpost.setEntity(new StringEntity(content, charset)); } System.out.println("-----------------执行开始"); System.out.println(content); System.out.println(httpost.toString()); HttpResponse response = httpclient.execute(httpost); System.out.println("--------------执行返回"+response.toString()); HttpEntity entity1 = response.getEntity(); // entity1.consumeContent(); return EntityUtils.toString(entity1, charset); } catch (Exception e) { e.printStackTrace(); } return null; } public static void destroy(String name) { HttpClient httpclient = sessionMap.get(name); httpclient.getConnectionManager().shutdown(); sessionMap.remove(name); } private static HttpClient createHttpClient() { DefaultHttpClient httpclient = new DefaultHttpClient(new PoolingClientConnectionManager()); System.getProperties() .setProperty( "httpclient.useragent", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; CIBA; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)"); try { httpclient.addRequestInterceptor(new HttpRequestInterceptor() { public void process(final HttpRequest request, final HttpContext context) throws HttpException, IOException { if (!request.containsHeader("Accept-Encoding")) { request.addHeader("Accept-Encoding", "gzip"); } } }); httpclient.addResponseInterceptor(new HttpResponseInterceptor() { public void process(final HttpResponse response, final HttpContext context) throws HttpException, IOException { HttpEntity entity = response.getEntity(); Header ceheader = entity.getContentEncoding(); if (ceheader != null) { HeaderElement[] codecs = ceheader.getElements(); for (int i = 0; i < codecs.length; i++) { if (codecs[i].getName().equalsIgnoreCase("gzip")) { response.setEntity(new GzipDecompressingEntity( response.getEntity())); return; } } } } }); } catch (Exception e) { e.printStackTrace(); } return httpclient; } private static HttpClient createHttpClientJuhe() { DefaultHttpClient httpclient = new DefaultHttpClient(); System.getProperties() .setProperty( "httpclient.useragent", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; CIBA; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)"); try { httpclient.addRequestInterceptor(new HttpRequestInterceptor() { public void process(final HttpRequest request, final HttpContext context) throws HttpException, IOException { if (!request.containsHeader("Accept-Encoding")) { request.addHeader("Accept-Encoding", "gzip"); } request.addHeader("Referer", "http://lbs.juhe.cn/cell.php"); } }); httpclient.addResponseInterceptor(new HttpResponseInterceptor() { public void process(final HttpResponse response, final HttpContext context) throws HttpException, IOException { HttpEntity entity = response.getEntity(); Header ceheader = entity.getContentEncoding(); if (ceheader != null) { HeaderElement[] codecs = ceheader.getElements(); for (int i = 0; i < codecs.length; i++) { if (codecs[i].getName().equalsIgnoreCase("gzip")) { response.setEntity(new GzipDecompressingEntity( response.getEntity())); return; } } } } }); } catch (Exception e) { e.printStackTrace(); } return httpclient; } static class GzipDecompressingEntity extends HttpEntityWrapper { public GzipDecompressingEntity(final HttpEntity entity) { super(entity); } @Override public InputStream getContent() throws IOException, IllegalStateException { // the wrapped entity's getContent() decides about repeatability InputStream wrappedin = wrappedEntity.getContent(); return new GZIPInputStream(wrappedin); } @Override public long getContentLength() { // length of ungzipped content is not known return -1; } } public static String getReg(String src, String reg) { if (src == null || reg == null) return null; Pattern p = Pattern.compile(reg); Matcher m = p.matcher(src); if (m.find()) { return m.group(1); } return null; } public static String get(String url, String name, String charset,boolean redirect) { if (charset == null) charset = HTTP.UTF_8; try { HttpClient httpclient; if (name == null) { // 不需要维持连接 httpclient = createHttpClient(); } else if (sessionMap.containsKey(name)) { httpclient = sessionMap.get(name); } else { httpclient = createHttpClient(); sessionMap.put(name, httpclient); } HttpGet httpget1 = new HttpGet(url); if (!redirect) { HttpParams params = httpclient.getParams(); params.setParameter(ClientPNames.HANDLE_REDIRECTS, false); httpget1.setParams(params); } // httpget1.addHeader("Authorization", // "OAuth oauth_consumer_key=\"450215437\",oauth_nonce=\"SThfUW\",oauth_signature_method=\"HMAC-SHA1\",oauth_timestamp=\"1386241655\",oauth_version=\"1.0\",x_auth_mode=\"client_auth\",x_auth_password=\"a77a125\",x_auth_username=\"450215437\",oauth_signature=\"2s6KCmXhuUgDAyl8gc/HMkT/dPY=\""); HttpResponse response1 = httpclient.execute(httpget1); if (response1.getStatusLine() != null && response1.getStatusLine().toString() .startsWith("HTTP/1.1 30")) { Header[] headers = response1.getHeaders("Location"); for (Header h : headers) { HttpEntity entity1 = response1.getEntity(); entity1.consumeContent(); return h.getValue(); } } HttpEntity entity1 = response1.getEntity(); return EntityUtils.toString(entity1, charset); } catch (Exception e) { e.printStackTrace(); } return null; } public static byte[] downloadFile(String url,String name){ try { HttpClient httpclient; if (name == null) { //不需要维持连接 httpclient = createHttpClient(); } else if (sessionMap.containsKey(name)) { httpclient = sessionMap.get(name); } else { httpclient = createHttpClient(); sessionMap.put(name, httpclient); } HttpGet httpget1 = new HttpGet(url);// httpget1.addHeader("Authorization", "Mozilla/5.0 (Linux; U; Android 2.3.6; en-us; HUAWEI U8661 Build/HuaweiU8661) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1"); HttpResponse response1 = httpclient.execute(httpget1); HttpEntity entity1 = response1.getEntity(); return EntityUtils.toByteArray(entity1);// return EntityUtils.toString(entity1, charset); } catch (Exception e) { e.printStackTrace(); } return null; } public static String postException(String url, String content, String name, String charset) throws Exception{ if (charset == null) charset = HTTP.UTF_8; HttpClient httpclient; if (name == null) { // 不需要维持连接 httpclient = createHttpClient(); } else if (sessionMap.containsKey(name)) { httpclient = sessionMap.get(name); } else { httpclient = createHttpClient(); sessionMap.put(name, httpclient); } HttpPost httpost = new HttpPost(url); if (content != null) { httpost.setEntity(new StringEntity(content, charset)); } HttpResponse response = httpclient.execute(httpost); HttpEntity entity1 = response.getEntity(); return EntityUtils.toString(entity1, charset); }}效果图：
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