使用Retrofit进行Http、Https网络请求（快速上手）

最新推荐文章于 2024-04-28 14:42:26 发布

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最新推荐文章于 2024-04-28 14:42:26 发布

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1.配置gradle

//注解包
compile 'com.jakewharton:butterknife:7.0.0'
//Retrofit2所需要的包//这里需要值得注意的是导入的retrofit2包的版本必须要一致，否则就会报错compile 'com.squareup.retrofit2:retrofit:2.0.0'
//ConverterFactory的Gson依赖包
compile 'com.squareup.retrofit2:converter-gson:2.0.0'

2.先使用http进行网络请求，这里我使用的是百度API的手机号码归属地查询的接口（点这里）

初始化Retrofit

private static final String BASE_URL = "http://apis.baidu.com";
private static final String API_KEY = "b90f262a4f321bb6755157bf1915b4f8";
//1.创建Retrofit对象
Retrofit retrofit = new Retrofit.Builder()       
.addConverterFactory(GsonConverterFactory.create())//增加返回值为Gson的支持(以实体类返回)        
.baseUrl(BASE_URL)//主机地址       
.build();

根据返回的json数据格式使用GsonFormat一键生成JavaBean（这个大家应该都会，AS常用的工具），最终结果如下：

public class PhoneResult {   
/**     
* errNum : 0    
* retMsg : success    
* retData : {"phone":"15210011578","prefix":"1521001","supplier":"移动","province":"北京","city":"北京","suit":"152卡"}
*/    

private int errNum;    
private String retMsg;    
private RetDataEntity retData;    
public void setErrNum(int errNum) {        
this.errNum = errNum;   
 }    
public void setRetMsg(String retMsg) {     
this.retMsg = retMsg;    
}    
public void setRetData(RetDataEntity retData) {       
this.retData = retData;    
}    
public int getErrNum() {        
return errNum;    
}    
public String getRetMsg() {        
return retMsg;    
}    
public RetDataEntity getRetData() {        
return retData;    
}    
public static class RetDataEntity {        
/**         
* phone : 15210011578         
* prefix : 1521001         
* supplier : 移动         
* province : 北京         
* city : 北京         
* suit : 152卡         
*/        
private String phone;        
private String prefix;        
private String supplier;        
private String province;        
private String city;        
private String suit;        
public void setPhone(String phone) {            
this.phone = phone;        
}        
public void setPrefix(String prefix) {            
this.prefix = prefix;        
}        
public void setSupplier(String supplier) {            
this.supplier = supplier;        
}        
public void setProvince(String province) {            
this.province = province;        
}        
public void setCity(String city) {            
this.city = city;        
}
public void setSuit(String suit) {            
this.suit = suit;        
}        
public String getPhone() {            
return phone;        
}        
public String getPrefix() {            
return prefix;        
}        
public String getSupplier() {            
return supplier;        
}        
public String getProvince() {            
return province;        
}        
public String getCity() {            
return city;        
}        
public String getSuit() {
            return suit;        
}    
}
}

定义请求的API

public interface PhoneService {    
@GET("/apistore/mobilenumber/mobilenumber")   //是方法Url
//@Query**(“phone”)来设定body的parameters.
Call<PhoneResult> getResult(@Header("apikey") String apikey, @Query("phone") String phone);    
}

调用API

//这里采用的是Java的动态代理模式
PhoneService service = retrofit.create(PhoneService.class);
//传入我们请求的键值对的值，mPhoneEt是我们输入的手机号
Call<PhoneResult> call = service.getResult(API_KEY, mPhoneEt.getText().toString());

发送请求

call.enqueue(new Callback<PhoneResult>() {    
@Override    
public void onResponse(Call<PhoneResult> call, Response<PhoneResult> response) {        
//处理结果       
if (response.isSuccessful()) {            
PhoneResult result = response.body();            
if (result != null) {                
if (result.getRetMsg() != null) {                    
mAddressTv.setText(result.getRetMsg());//设置显示到texiview上                
} else {                    
PhoneResult.RetDataEntity entity = result.getRetData();
mAddressTv.setText(entity.getProvince());               
}           
}       
}    
}    
@Override    
public void onFailure(Call<PhoneResult> call, Throwable t) {  
    }
});

看下结果

最终结果

3.使用https进行网络请求

https请求服务器需要的证书

都知道Retrofit的网络请求是使用okhttp，所以我们只需要给
OkHttpClient.Builder().sslSocketFactory(sslSocketFactory)，那么SSLSocketFactory怎么得到呢，哈哈，不要急，方法已经写好：

public class SslContextFactory {    
private static final String CLIENT_TRUST_PASSWORD = "changeit";//信任证书密码，该证书默认密码是changeit    
private static final String CLIENT_AGREEMENT = "TLS";//使用协议    
private static final String CLIENT_TRUST_MANAGER = "X509";   
private static final String CLIENT_TRUST_KEYSTORE = "BKS";    
SSLContext sslContext = null;    
public SSLContext getSslSocket() {        
try {            
//取得SSL的SSLContext实例            
sslContext = SSLContext.getInstance(CLIENT_AGREEMENT);            
//取得TrustManagerFactory的X509密钥管理器实例            
TrustManagerFactory trustManager = TrustManagerFactory.getInstance(CLIENT_TRUST_MANAGER);            
//取得BKS密库实例            
KeyStore tks = KeyStore.getInstance(CLIENT_TRUST_KEYSTORE);            
InputStream is = MyApplication.getInstance().getResources().openRawResource(R.raw.suplcerts);            
try {                
tks.load(is, CLIENT_TRUST_PASSWORD.toCharArray());            
} finally {                
is.close();            
}            
//初始化密钥管理器            
trustManager.init(tks);            
//初始化SSLContext            
sslContext.init(null, trustManager.getTrustManagers(), null);        
} catch (Exception e) {           
Log.e("SslContextFactory", e.getMessage());       
}        
return sslContext;    }}

给OkHttpClient.Builder().sslSocketFactory(sslSocketFactory)

SSLSocketFactory sslSocketFactory = new SslContextFactory().getSslSocket().getSocketFactory();
OkHttpClient.Builder okHttpClient = new OkHttpClient.Builder().sslSocketFactory(sslSocketFactory);

创建Retrofit对象

Retrofit retrofit = new Retrofit.Builder()        
.addConverterFactory(GsonConverterFactory.create())//增加返回值为Gson的支持(以实体类返回)        
.baseUrl("https://skyish-test.yunext.com")//主机地址        
.client(okHttpClient.build())       /注意这里要给retrofit 设置okhttpclient
.build();