HttpEntity的使用 .

package com.scl.base;

import java.io.IOException;
import java.io.UnsupportedEncodingException;

import org.apache.http.HttpEntity;
import org.apache.http.ParseException;
import org.apache.http.entity.StringEntity;
import org.apache.http.util.EntityUtils;

public class HttpClientDemo06 {

/**
* @param args
*/
public static void main(String[] args) {
try {
HttpEntity entity = new StringEntity("这一个字符串实体", "UTF-8");
//内容类型
System.out.println(entity.getContentType());
//内容的编码格式
System.out.println(entity.getContentEncoding());
//内容的长度
System.out.println(entity.getContentLength());
//把内容转成字符串
System.out.println(EntityUtils.toString(entity));
//内容转成字节数组
System.out.println(EntityUtils.toByteArray(entity).length);
//还有个直接获得流
//entity.getContent();
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(e);
} catch (ParseException e) {
} catch (IOException e) {
}

}

}

public static void test() throws IllegalStateException, IOException{
HttpResponse response = null;
HttpEntity entity = response.getEntity();

if(entity!=null){

InputStream is = entity.getContent();
try{
//做一些操作
}finally{
//最后别忘了关闭应该关闭的资源，适当的释放资源
if(is != null){
is.close();
}
//这个方法也可以把底层的流给关闭了
EntityUtils.consume(entity);
//下面是这方法的源码
/*public static void consume(final HttpEntity entity) throws IOException {
if (entity == null) {
return;
}
if (entity.isStreaming()) {
InputStream instream = entity.getContent();
if (instream != null) {
instream.close();
}
}
}*/
}

}