这是我的程序的错误!不知道怎么回事
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URI;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.client.methods.RequestBuilder;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import Icrawl.ICrawler;
import pojos.CrawlResultPojo;
import pojos.UrlPojo;
public class HttpClientCrawlerImpl implements ICrawler {
public CloseableHttpClient httpclient = HttpClients.custom().build();
@Override
public CrawlResultPojo crawl(UrlPojo urlPojo) {
if (urlPojo == null) {
return null;
}
CrawlResultPojo crawlResultPojo = new CrawlResultPojo();
CloseableHttpResponse response1 = null;
BufferedReader br = null;
try {
HttpGet httpget = new HttpGet(urlPojo.getUrl());
response1 = httpclient.execute(httpget);
HttpEntity entity = response1.getEntity();
InputStreamReader isr = new InputStreamReader(entity.getContent(),
"utf-8");
br = new BufferedReader(isr);
String line = null;
StringBuilder stringBuilder = new StringBuilder();
while ((line = br.readLine()) != null) {
stringBuilder.append(line + "\n");
}
crawlResultPojo.setSuccess(true);
crawlResultPojo.setPageContent(stringBuilder.toString());
return crawlResultPojo;
} catch (Exception e) {
e.printStackTrace();
crawlResultPojo.setSuccess(false);
} finally {
if (response1 != null) {
try {
response1.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
if (br != null) {
try {
br.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
return crawlResultPojo;
}
/**
* 传入加入参数post参数的url pojo
*/
public CrawlResultPojo crawl4Post(UrlPojo urlPojo) {
if (urlPojo == null) {
return null;
}
CrawlResultPojo crawlResultPojo = new CrawlResultPojo();
CloseableHttpResponse response1 = null;
BufferedReader br = null;
try {
RequestBuilder rb = RequestBuilder.post().setUri(
new URI(urlPojo.getUrl()));
// .addParameter("IDToken1",
// "username").addParameter("IDToken2", "password").build();
Map<String, Object> parasMap = urlPojo.getParasMap();
if (parasMap != null) {
for (Entry<String, Object> entry : parasMap.entrySet()) {
rb
.addParameter(entry.getKey(), entry.getValue()
.toString());
}
}
HttpUriRequest httpRequest = rb.build();
response1 = httpclient.execute(httpRequest);
HttpEntity entity = response1.getEntity();
InputStreamReader isr = new InputStreamReader(entity.getContent(),
"utf-8");
br = new BufferedReader(isr);
String line = null;
StringBuilder stringBuilder = new StringBuilder();
while ((line = br.readLine()) != null) {
stringBuilder.append(line + "\n");
}
crawlResultPojo.setSuccess(true);
crawlResultPojo.setPageContent(stringBuilder.toString());
return crawlResultPojo;
} catch (Exception e) {
e.printStackTrace();
crawlResultPojo.setSuccess(false);
} finally {
if (response1 != null) {
try {
response1.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
if (br != null) {
try {
br.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
return crawlResultPojo;
}
@SuppressWarnings("unused")
public static void main(String[] args) throws Exception {
HttpClientCrawlerImpl httpClientCrawlerImpl = new HttpClientCrawlerImpl();
String url = "http://www.wdzj.com/front_select-platt";
UrlPojo urlPojo = new UrlPojo(url);
Map<String, Object> parasMap = new HashMap<String, Object>();
int max_page_number = 1000;
parasMap.put("currPage", 30);
parasMap.put("params", "");
parasMap.put("sort", 0);
urlPojo.setParasMap(parasMap);
CrawlResultPojo resultPojo = httpClientCrawlerImpl.crawl4Post(urlPojo);
if (resultPojo != null) {
System.out.println(resultPojo);
}
}
}
这是代码,怎么解决这个报错啊???