七、HTTP应答状态

import java.net.*;

public class SearchEngines extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
// getParameter自动解码URL编码的查询字符串。由于我们
// 要把查询字符串发送给另一个服务器，因此再次使用
// URLEncoder进行URL编码
String searchString =
URLEncoder.encode(request.getParameter("searchString"));
String numResults =
request.getParameter("numResults");
String searchEngine =
request.getParameter("searchEngine");
SearchSpec[] commonSpecs = SearchSpec.getCommonSpecs();
for(int i=0; i＜commonSpecs.length; i ) {
SearchSpec searchSpec = commonSpecs[i];
if (searchSpec.getName().equals(searchEngine)) {
String url =
response.encodeURL(searchSpec.makeURL(searchString,
numResults));
response.sendRedirect(url);
return;
}
}
response.sendError(response.SC_NOT_FOUND,
"No recognized search engine specified.");
}

public void doPost(HttpServletRequest request, 内容来自dedecms
HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}
}


　　 SearchSpec.java
package hall;

class SearchSpec {
private String name, baseURL, numResultsSuffix;

private static SearchSpec[] commonSpecs =
{ new SearchSpec("google",
"http://www.google.com/search?q=",
"&num="),
new SearchSpec("infoseek",
"http://infoseek.go.com/Titles?qt=",
"&nh="),
new SearchSpec("lycos",
"http://lycospro.lycos.com/cgi-bin/pursuit?query=",
"&maxhits="),
new SearchSpec("hotbot",
"http://www.hotbot.com/?MT=",
"&DC=")
};

public SearchSpec(String name,
String baseURL,
String numResultsSuffix) {
this.name = name;
this.baseURL = baseURL;
this.numResultsSuffix = numResultsSuffix;
}

public String makeURL(String searchString, String numResults) {
return(baseURL searchString numResultsSuffix numResults);
}

public String getName() {

标签云:状态 请求 HTTP 代码 文档 1.1 服务器 应答 一个