Base64Encoder无法解析 [英] Base64Encoder cannot be resolved

问题描述

这是我在JSP文件中的Java代码。我正在

This is my Java code in a JSP file. I am getting

无法解析Base64Encoder。

Base64Encoder cannot be resolved.

为什么会这样？我必须添加与 Base64Encoder 相关的内容。任何建议将不胜感激。

Why is it so? I have to add something related to Base64Encoder. Any suggestions will be appreciated.

    <%@ page language="java" import="java.io.OutputStream,java.net.HttpURLConnection,java.net.URL,java.util.Collection,org.apache.commons.httpclient.Credentials,org.apache.commons.httpclient.auth.AuthenticationException,org.apache.commons.httpclient.auth.MalformedChallengeException,org.apache.commons.httpclient.params.DefaultHttpParams,org.apache.commons.httpclient.params.HttpParams,org.apache.commons.httpclient.auth.AuthScheme,org.apache.commons.httpclient.auth.AuthPolicy,org.apache.commons.httpclient.HttpClient,org.apache.commons.httpclient.UsernamePasswordCredentials,org.apache.commons.httpclient.auth.AuthScope,org.apache.commons.httpclient.methods.GetMethod,org.w3c.dom.*,javax.xml.parsers.DocumentBuilder,javax.xml.parsers.DocumentBuilderFactory,java.net.*,java.io.*" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>

<%
String a_Url = request.getParameter( "url" ) ;

URL url = new URL (a_Url);
String encoding = Base64Encoder.encode ("test:test");

HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setDoOutput(true);
connection.setRequestProperty  ("Authorization", "Basic " + encoding);
InputStream content = (InputStream)connection.getInputStream();
BufferedReader in   = 
    new BufferedReader (new InputStreamReader (content));
String line;
while ((line = in.readLine()) != null) {
    System.out.println(line);
}

%>

推荐答案

看起来你正在使用一个不存在的类在您已包含在Web应用程序中的jar中。你可以试试以下吗？如果有必要进行调整，我只是查看公共文档并输入 -

Looks like you are using a class that does not exist in a jar you have included in the web application. Can you try the following? Make adjustments if necessary, I am just looking at the documentation for commons and typing this out --

1. 转到 http://commons.apache.org/codec/index.html 并阅读那里的信息


2. 现在转到 http://commons.apache.org/codec/download_codec .cgi 并下载zip文件


3. 解压缩jar文件并将其复制到Web应用程序的lib目录中


4. 替换
   行[String encoding = Base64Encoder.encode（test：test）;]

1. Go to http://commons.apache.org/codec/index.html and read through the information there
2. Now go to http://commons.apache.org/codec/download_codec.cgi and download the zip file
3. Extract out the jar file and copy it to the lib directory of your web application
4. Replace the line [String encoding = Base64Encoder.encode ("test:test");]

with

String encoding = new String(
 org.apache.commons.codec.binary.Base64.encodeBase64   
    (org.apache.commons.codec.binary.StringUtils.getBytesUtf8("test:test"))
  );

这篇关于Base64Encoder无法解析的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！