com.gitee.apanlh.util.net.http.handler.HttpRequestInterceptorChain Maven / Gradle / Ivy
package com.gitee.apanlh.util.net.http.handler;
import com.gitee.apanlh.exp.HttpException;
import com.gitee.apanlh.util.net.http.HttpBodyTypeEnum;
import com.gitee.apanlh.util.net.http.HttpClient;
import com.gitee.apanlh.util.net.http.HttpRequest;
import com.gitee.apanlh.util.net.http.handler.body.HttpBodyFormDataParseStrategy;
import com.gitee.apanlh.util.net.http.handler.body.HttpBodyFormParseStrategy;
import com.gitee.apanlh.util.net.http.handler.body.HttpBodyJsonParseStrategy;
import com.gitee.apanlh.util.net.http.handler.body.HttpBodyParseContext;
import com.gitee.apanlh.util.net.http.handler.body.HttpBodyPathVariableParseStrategy;
import com.gitee.apanlh.util.net.http.handler.body.HttpBodyQueryParamParseStrategy;
import java.util.List;
/**
* HTTP请求拦截器责任链，按照顺序执行HTTP请求拦截器
*
在HTTP请求发送前执行
*
* @author Pan
*/
public class HttpRequestInterceptorChain extends HttpInterceptorChain {
/** 请求体解析上下文 */
private static final HttpBodyParseContext BODY_PARSE_CONTEXT = initContext();
/** 默认实现拦截器 */
private static final HttpRequestBodyChain HTTP_REQUEST_BODY_CHAIN = new HttpRequestBodyChain();
private static final HttpConnectionConfigureChain HTTP_CONNECTION_CONFIGURE_CHAIN = new HttpConnectionConfigureChain();
private static final HttpContentTypeConfigureChain HTTP_CONTENT_TYPE_CONFIGURE_CHAIN = new HttpContentTypeConfigureChain();
private static final HttpContentLengthConfigureChain HTTP_CONTENT_LENGTH_CONFIGURE_CHAIN = new HttpContentLengthConfigureChain();
private static final HttpHeaderConfigureChain HTTP_HEADER_CONFIGURE_CHAIN = new HttpHeaderConfigureChain();
/**
* 构造函数-默认初始化拦截链
*
有序集合
*
在HTTP参数解析后执行
*
* @author Pan
*/
HttpRequestInterceptorChain() {
super();
}
/**
* 构造函数-添加一个HTTP拦截器
*
继承父类
*
* @author Pan
* @param interceptor 需要添加的拦截器
*/
public HttpRequestInterceptorChain(HttpInterceptor interceptor) {
super(interceptor);
}
/**
* 构造函数-初始化链
*
继承父类
*
* @author Pan
* @param interceptors 一个或多个链
*/
public HttpRequestInterceptorChain(List interceptors) {
super(interceptors);
}
/**
* 执行HTTP请求拦截器责任
*
返回null则终止执行接下来所有链
*
在HTTP请求发送前执行
*
* @param httpRequest HTTP请求对象
* @param client HTTP客户端
* @return HttpRequest HTTP请求对象
* @throws HttpException 处理异常，则抛出该异常
*/
@Override
public HttpRequest proceed(HttpRequest httpRequest, HttpClient client) throws HttpException {
while (super.hasNext()) {
HttpRequest proceed = super.proceed(httpRequest, client);
// 如果返回null停止执行
if (proceed == null) {
break;
}
}
return httpRequest;
}
@Override
public void loadExecute() throws HttpException {
// 先解析请求体，避免pathVariable及queryParam顺序问题
super.load(HTTP_REQUEST_BODY_CHAIN);
super.load(HTTP_CONNECTION_CONFIGURE_CHAIN);
super.load(HTTP_CONTENT_TYPE_CONFIGURE_CHAIN);
super.load(HTTP_CONTENT_LENGTH_CONFIGURE_CHAIN);
super.load(HTTP_HEADER_CONFIGURE_CHAIN);
}
/**
* 静态初始化HTTPRequestBody请求解析上下文
*
* @author Pan
* @return HttpBodyParseContext
*/
static HttpBodyParseContext initContext() {
// 初始化HTTPRequest请求解析
HttpBodyParseContext bodyParseContext = new HttpBodyParseContext();
bodyParseContext.register(new HttpBodyQueryParamParseStrategy(), HttpBodyTypeEnum.QUERY_PARAMS);
bodyParseContext.register(new HttpBodyFormParseStrategy(), HttpBodyTypeEnum.FORM);
bodyParseContext.register(new HttpBodyFormDataParseStrategy(), HttpBodyTypeEnum.FORM_DATA);
bodyParseContext.register(new HttpBodyJsonParseStrategy(), HttpBodyTypeEnum.JSON);
bodyParseContext.register(new HttpBodyPathVariableParseStrategy(), HttpBodyTypeEnum.PATH_VARIABLE);
return bodyParseContext;
}
/**
* 获取请求解析上下文
*
* @author Pan
* @return HttpBodyParseContext
*/
public static HttpBodyParseContext getBodyParseContext() {
return BODY_PARSE_CONTEXT;
}
}