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202
app/src/main/java/http/BasicParamsInterceptor.java
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202
app/src/main/java/http/BasicParamsInterceptor.java
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package http;
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import android.text.TextUtils;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Map;
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import okhttp3.FormBody;
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import okhttp3.Headers;
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import okhttp3.HttpUrl;
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import okhttp3.Interceptor;
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import okhttp3.MediaType;
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import okhttp3.Request;
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import okhttp3.RequestBody;
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import okhttp3.Response;
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import okio.Buffer;
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/**
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*
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* OkHttp 公共参数拦截器
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* from: https://github.com/jkyeo/okhttp-basicparamsinterceptor.git
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* Created by zhouwei on 16/11/10.
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*/
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public class BasicParamsInterceptor implements Interceptor {
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Map<String, String> queryParamsMap = new HashMap<>();
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Map<String, String> paramsMap = new HashMap<>();
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Map<String, String> headerParamsMap = new HashMap<>();
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List<String> headerLinesList = new ArrayList<>();
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private BasicParamsInterceptor() {
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}
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@Override
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public Response intercept(Chain chain) throws IOException {
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Request request = chain.request();
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Request.Builder requestBuilder = request.newBuilder();
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// process header params inject
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Headers.Builder headerBuilder = request.headers().newBuilder();
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if (headerParamsMap.size() > 0) {
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Iterator iterator = headerParamsMap.entrySet().iterator();
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while (iterator.hasNext()) {
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Map.Entry entry = (Map.Entry) iterator.next();
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headerBuilder.add((String) entry.getKey(), (String) entry.getValue());
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}
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}
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if (headerLinesList.size() > 0) {
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for (String line: headerLinesList) {
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headerBuilder.add(line);
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}
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requestBuilder.headers(headerBuilder.build());
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}
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// process header params end
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// process queryParams inject whatever it's GET or POST
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if (queryParamsMap.size() > 0) {
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request = injectParamsIntoUrl(request.url().newBuilder(), requestBuilder, queryParamsMap);
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}
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// process post body inject
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if (queryParamsMap.size() > 0) {
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if (canInjectIntoBody(request)) {
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FormBody.Builder formBodyBuilder = new FormBody.Builder();
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for(Map.Entry<String, String> entry : paramsMap.entrySet()) {
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formBodyBuilder.add((String) entry.getKey(), (String) entry.getValue());
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}
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RequestBody formBody = formBodyBuilder.build();
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String postBodyString = bodyToString(request.body());
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postBodyString += ((postBodyString.length() > 0) ? "&" : "") + bodyToString(formBody);
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requestBuilder.post(RequestBody.create(MediaType.parse("application/x-www-form-urlencoded;charset=UTF-8"), postBodyString));
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}
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}
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request = requestBuilder.build();
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return chain.proceed(request);
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}
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private boolean canInjectIntoBody(Request request) {
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if (request == null) {
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return false;
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}
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if (!TextUtils.equals(request.method(), "POST")) {
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return false;
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}
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RequestBody body = request.body();
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if (body == null) {
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return false;
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}
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MediaType mediaType = body.contentType();
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if (mediaType == null) {
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return false;
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}
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if (!TextUtils.equals(mediaType.subtype(), "x-www-form-urlencoded")) {
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return false;
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}
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return true;
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}
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// func to inject params into url
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private Request injectParamsIntoUrl(HttpUrl.Builder httpUrlBuilder, Request.Builder requestBuilder, Map<String, String> paramsMap) {
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if (paramsMap.size() > 0) {
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Iterator iterator = paramsMap.entrySet().iterator();
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while (iterator.hasNext()) {
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Map.Entry entry = (Map.Entry) iterator.next();
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httpUrlBuilder.addQueryParameter((String) entry.getKey(), (String) entry.getValue());
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}
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requestBuilder.url(httpUrlBuilder.build());
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return requestBuilder.build();
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}
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return null;
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}
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private static String bodyToString(final RequestBody request){
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try {
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final RequestBody copy = request;
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final Buffer buffer = new Buffer();
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if(copy != null)
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copy.writeTo(buffer);
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else
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return "";
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return buffer.readUtf8();
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}
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catch (final IOException e) {
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return "did not work";
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}
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}
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public static class Builder {
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BasicParamsInterceptor interceptor;
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public Builder() {
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interceptor = new BasicParamsInterceptor();
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}
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public Builder addParam(String key, String value) {
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interceptor.paramsMap.put(key, value);
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return this;
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}
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public Builder addParamsMap(Map<String, String> paramsMap) {
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interceptor.paramsMap.putAll(paramsMap);
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return this;
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}
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public Builder addHeaderParam(String key, String value) {
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interceptor.headerParamsMap.put(key, value);
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return this;
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}
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public Builder addHeaderParamsMap(Map<String, String> headerParamsMap) {
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interceptor.headerParamsMap.putAll(headerParamsMap);
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return this;
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}
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public Builder addHeaderLine(String headerLine) {
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int index = headerLine.indexOf(":");
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if (index == -1) {
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throw new IllegalArgumentException("Unexpected header: " + headerLine);
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}
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interceptor.headerLinesList.add(headerLine);
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return this;
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}
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public Builder addHeaderLinesList(List<String> headerLinesList) {
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for (String headerLine: headerLinesList) {
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int index = headerLine.indexOf(":");
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if (index == -1) {
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throw new IllegalArgumentException("Unexpected header: " + headerLine);
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}
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interceptor.headerLinesList.add(headerLine);
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}
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return this;
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}
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public Builder addQueryParam(String key, String value) {
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interceptor.queryParamsMap.put(key, value);
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return this;
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}
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public Builder addQueryParamsMap(Map<String, String> queryParamsMap) {
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interceptor.queryParamsMap.putAll(queryParamsMap);
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return this;
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}
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public BasicParamsInterceptor build() {
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return interceptor;
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}
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}
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}
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