Android http 的使用
1、okHttp
https://github.com/square/okhttp
2、okhttp-utils
https://github.com/hongyangAndroid/okhttp-utils
3、NoHttp
https://github.com/yanzhenjie/NoHttp
4、okhttp-OkGo
https://github.com/jeasonlzy/okhttp-OkGo
5、最原生的http
package www.yiba.com.wifisdk.http;
import android.os.Build;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import javax.net.ssl.HttpsURLConnection;
public class HttpUtil {
private static final int TIMEOUT_IN_MILLIONS = 25000;
/**
* Get请求，获得返回数据
* @param urlStr
* @return
* @throws Exception
*/
public static String doGet(String urlStr , Callback callback) {
URL url = null;
URLConnection conn = null;
InputStream is = null;
ByteArrayOutputStream baos = null;
try {
url = new URL(urlStr);
int responseCode = -1;
if (urlStr.toLowerCase().startsWith("https")) {
conn = url.openConnection();
((HttpsURLConnection) conn).setRequestMethod("GET");
conn.setReadTimeout(TIMEOUT_IN_MILLIONS);
conn.setConnectTimeout(TIMEOUT_IN_MILLIONS);
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
if (Build.VERSION.SDK != null
&& Build.VERSION.SDK_INT > 13) {//http://www.tuicool.com/articles/7FrMVf
conn.setRequestProperty("Connection", "close");
}
responseCode = ((HttpsURLConnection) conn).getResponseCode();
} else {
conn = url.openConnection();
((HttpURLConnection) conn).setRequestMethod("GET");
conn.setReadTimeout(TIMEOUT_IN_MILLIONS);
conn.setConnectTimeout(TIMEOUT_IN_MILLIONS);
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
if (Build.VERSION.SDK != null
&& Build.VERSION.SDK_INT > 13) {//http://www.tuicool.com/articles/7FrMVf
conn.setRequestProperty("Connection", "close");
}
responseCode = ((HttpURLConnection) conn).getResponseCode();
}
if (responseCode == 200) {
is = conn.getInputStream();
baos = new ByteArrayOutputStream();
int len = -1;
byte[] buf = new byte[128];
while ((len = is.read(buf)) != -1) {
baos.write(buf, 0, len);
}
baos.flush();
if ( callback != null ){
callback.ok( baos.toString() );
}
return baos.toString();
} else {
if ( callback != null ){
callback.fail();
}
throw new RuntimeException(" responseCode is not 200 ... ");
}
} catch (Exception e) {
if ( callback != null ){
callback.timeOut();
}
e.printStackTrace();
} finally {
try {
if (is != null)
is.close();
} catch (IOException e) {
}
try {
if (baos != null)
baos.close();
} catch (IOException e) {
}
if (conn != null) {
if (urlStr.toLowerCase().startsWith("https")) {
((HttpsURLConnection) conn).disconnect();
} else {
((HttpURLConnection) conn).disconnect();
}
}
}
return null;
}
public static String doPost(String url, String param , Callback callback ) {
PrintWriter out = null;
BufferedReader in = null;
String result = "";
URLConnection conn = null;
try {
URL realUrl = new URL(url);
//打开和URL之间的连接
conn = realUrl.openConnection();
//设置通用的请求属性
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
if (url.toLowerCase().startsWith("https")) {
((HttpsURLConnection) conn).setRequestMethod("POST");
} else {
((HttpURLConnection) conn).setRequestMethod("POST");
}
conn.setRequestProperty("charset", "utf-8");
conn.setUseCaches(false);
//发送POST请求必须设置如下两行
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setReadTimeout(TIMEOUT_IN_MILLIONS);
conn.setConnectTimeout(TIMEOUT_IN_MILLIONS);
if (param != null && !param.trim().equals("")) {
// 获取URLConnection对象对应的输出流
out = new PrintWriter(conn.getOutputStream());
// 发送请求参数
out.print(param);
// flush输出流的缓冲
out.flush();
}
int responseCode = ((HttpURLConnection) conn).getResponseCode();
if ( responseCode == 200 ){
// 定义BufferedReader输入流来读取URL的响应
in = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
if ( callback != null ){
callback.ok( result );
}
}else {
if ( callback != null ){
callback.fail();
}
}
} catch (Exception e) {
if ( callback != null ){
callback.timeOut();
}
e.printStackTrace();
}
finally {
try {
if (out != null) {
out.close();
}
if (in != null) {
in.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
if (conn != null) {
if (url.toLowerCase().startsWith("https")) {
((HttpsURLConnection) conn).disconnect();
} else {
((HttpURLConnection) conn).disconnect();
}
}
}
return result;
}
public interface Callback{
void ok( String result ) ;
void fail();
void timeOut() ;
}
}
6、对原生http的简易封装
6.1 HttpCall http 请求结果的实体类
package www.yiba.com.analytics.http;
/**
* Created by ${zyj} on 2016/8/18.
*/
public class HttpCall {
private ResponseType httpQuestType ;
private String result ;
public ResponseType getHttpQuestType() {
return httpQuestType;
}
public void setHttpQuestType(ResponseType httpQuestType) {
this.httpQuestType = httpQuestType;
}
public String getResult() {
return result;
}
public void setResult(String result) {
this.result = result;
}
}
6.2 ResponseType http 请求结果的类型
package www.yiba.com.analytics.http;
/**
* Created by ${zyj} on 2016/8/18.
*/
public enum ResponseType {
OK("请求成功") , FAIL("请求失败") , TIMEOUT("请求超时") ;
private String name ;
private ResponseType(String name ){
this.name = name ;
}
public String getName() {
return name;
}
}
6.3 HttpUtil 包含 get 和 post请求
package www.yiba.com.analytics.http;
import android.os.Build;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import javax.net.ssl.HttpsURLConnection;
public class HttpUtil {
private static final int TIMEOUT_IN_MILLIONS = 25000;
/**
* Get请求，获得返回数据
* @param urlStr
* @return
* @throws Exception
*/
public static HttpCall doGet(String urlStr , Callback callback) {
URL url = null;
URLConnection conn = null;
InputStream is = null;
ByteArrayOutputStream baos = null;
HttpCall httpCall = new HttpCall() ;
try {
url = new URL(urlStr);
int responseCode = -1;
if (urlStr.toLowerCase().startsWith("https")) {
conn = url.openConnection();
((HttpsURLConnection) conn).setRequestMethod("GET");
conn.setReadTimeout(TIMEOUT_IN_MILLIONS);
conn.setConnectTimeout(TIMEOUT_IN_MILLIONS);
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
if (Build.VERSION.SDK != null
&& Build.VERSION.SDK_INT > 13) {//http://www.tuicool.com/articles/7FrMVf
conn.setRequestProperty("Connection", "close");
}
responseCode = ((HttpsURLConnection) conn).getResponseCode();
} else {
conn = url.openConnection();
((HttpURLConnection) conn).setRequestMethod("GET");
conn.setReadTimeout(TIMEOUT_IN_MILLIONS);
conn.setConnectTimeout(TIMEOUT_IN_MILLIONS);
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
if (Build.VERSION.SDK != null
&& Build.VERSION.SDK_INT > 13) {//http://www.tuicool.com/articles/7FrMVf
conn.setRequestProperty("Connection", "close");
}
responseCode = ((HttpURLConnection) conn).getResponseCode();
}
if (responseCode == 200) {
is = conn.getInputStream();
baos = new ByteArrayOutputStream();
int len = -1;
byte[] buf = new byte[128];
while ((len = is.read(buf)) != -1) {
baos.write(buf, 0, len);
}
baos.flush();
if ( callback != null ){
callback.ok( baos.toString() );
}
if ( httpCall != null ){
httpCall.setHttpQuestType( ResponseType.OK );
httpCall.setResult( baos.toString() );
}
} else {
if ( callback != null ){
callback.fail();
}
if ( httpCall != null ){
httpCall.setHttpQuestType( ResponseType.FAIL );
httpCall.setResult( "" );
}
}
} catch (Exception e) {
if ( callback != null ){
callback.timeOut();
}
if ( httpCall != null ){
httpCall.setHttpQuestType( ResponseType.TIMEOUT );
httpCall.setResult( "" );
}
e.printStackTrace();
} finally {
try {
if (is != null)
is.close();
} catch (IOException e) {
}
try {
if (baos != null)
baos.close();
} catch (IOException e) {
}
if (conn != null) {
if (urlStr.toLowerCase().startsWith("https")) {
((HttpsURLConnection) conn).disconnect();
} else {
((HttpURLConnection) conn).disconnect();
}
}
return httpCall ;
}
}
public static HttpCall doPost(String url, String param , Callback callback ) {
PrintWriter out = null;
BufferedReader in = null;
String result = "";
URLConnection conn = null;
HttpCall httpCall = new HttpCall() ;
try {
URL realUrl = new URL(url);
//打开和URL之间的连接
conn = realUrl.openConnection();
//设置通用的请求属性
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("Content-Type",
"application/json");
if (url.toLowerCase().startsWith("https")) {
((HttpsURLConnection) conn).setRequestMethod("POST");
} else {
((HttpURLConnection) conn).setRequestMethod("POST");
}
conn.setRequestProperty("charset", "utf-8");
conn.setUseCaches(false);
//发送POST请求必须设置如下两行
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setReadTimeout(TIMEOUT_IN_MILLIONS);
conn.setConnectTimeout(TIMEOUT_IN_MILLIONS);
if (param != null && !param.trim().equals("")) {
// 获取URLConnection对象对应的输出流
out = new PrintWriter(conn.getOutputStream());
// 发送请求参数
out.print(param);
// flush输出流的缓冲
out.flush();
}
int responseCode = ((HttpURLConnection) conn).getResponseCode();
if ( responseCode == 200 ){
// 定义BufferedReader输入流来读取URL的响应
in = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
if ( callback != null ){
callback.ok( result );
}
if ( httpCall != null ){
httpCall.setHttpQuestType( ResponseType.OK );
httpCall.setResult( result );
}
}else {
if ( callback != null ){
callback.fail();
}
if ( httpCall != null ){
httpCall.setHttpQuestType( ResponseType.FAIL );
httpCall.setResult( "" );
}
}
} catch (Exception e) {
if ( callback != null ){
callback.timeOut();
}
if ( httpCall != null ){
httpCall.setHttpQuestType( ResponseType.TIMEOUT );
httpCall.setResult( "" );
}
e.printStackTrace();
}
finally {
try {
if (out != null) {
out.close();
}
if (in != null) {
in.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
if (conn != null) {
if (url.toLowerCase().startsWith("https")) {
((HttpsURLConnection) conn).disconnect();
} else {
((HttpURLConnection) conn).disconnect();
}
}
return httpCall ;
}
}
public interface Callback{
void ok(String result) ;
void fail();
void timeOut() ;
}
}
6.4 如何使用
private void httpGet(){
//get 用法1
new Thread(new Runnable() {
@Override
public void run() {
HttpUtil.doGet("http://www.baidu.com", new HttpUtil.Callback() {
@Override
public void ok(String result) {
//请求成功
}
@Override
public void fail() {
//请求失败
}
@Override
public void timeOut() {
//请求超时
}
}) ;
}
}) ;
//get 用法2
new Thread(new Runnable() {
@Override
public void run() {
HttpCall httpCall = HttpUtil.doGet( "http://www.baidu.com" , null ) ;
switch ( httpCall.getHttpQuestType() ){
case OK:
//请求成功
break;
case FAIL:
//请求失败
break;
case TIMEOUT:
//请求超时
break;
}
}
}) ;
}
private void httpPost(){
//post 用法1
new Thread(new Runnable() {
@Override
public void run() {
HttpUtil.doPost("http://www.baidu.com", "post请求参数" , new HttpUtil.Callback() {
@Override
public void ok(String result) {
//请求成功
}
@Override
public void fail() {
//请求失败
}
@Override
public void timeOut() {
//请求超时
}
}) ;
}
}) ;
//post 用法2
new Thread(new Runnable() {
@Override
public void run() {
HttpCall httpCall = HttpUtil.doPost( "http://www.baidu.com" , "post请求参数" , null ) ;
switch ( httpCall.getHttpQuestType() ){
case OK:
//请求成功
break;
case FAIL:
//请求失败
break;
case TIMEOUT:
//请求超时
break;
}
}
}) ;
}
7、http下载图片并且压缩bitmap
//从网络下载bitmap
private Bitmap downLoadBitmapFromNet( String urlString ){
InputStream inputStream = null ;
HttpURLConnection conn = null ;
Bitmap bitmap ;
try {
URL url = new URL( urlString ) ;
conn = (HttpURLConnection) url.openConnection();
inputStream = new BufferedInputStream( conn.getInputStream() ) ;
inputStream.mark( inputStream.available() );
//压缩图片
BitmapFactory.Options options = new BitmapFactory.Options() ;
options.inJustDecodeBounds = true ;
BitmapFactory.decodeStream( inputStream , null , options ) ;
options.inSampleSize = 4 ;
options.inPreferredConfig = Bitmap.Config.RGB_565 ;
options.inJustDecodeBounds = false ;
inputStream.reset();
bitmap = BitmapFactory.decodeStream( inputStream , null , options ) ;
return bitmap ;
} catch (MalformedURLException e) {
e.printStackTrace();
}catch (IOException e) {
e.printStackTrace();
}finally {
if ( inputStream != null ){
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if ( conn != null ){
conn.disconnect();
}
}
return null ;
}
需要注意的事项
1、并不是所有的inputStream都支持mark()方法的, 因为这里的 InputStream其实是 BufferedInputStream 。 BufferedInputStream 继承 InputStream 并且重写了里面的 mark() 、reset（） 、markSupported()
