java发送https请求证书问题
配证书：Getting Tomcat SSL (https) Working
1.Create a certificate keystore containing a single self-signed certificate by executing the following command. Specify a password value of "changeit ". Note that this command creates both the certificate and the keystore
Windows: 进到%JAVA_HOME%\bin\目录下输入：
keytool -genkey -alias tomcat -keyalg RSA -keystore tomcat.keystore
产生一个tomcat.keystore 文件
Unix: $JAVA_HOME/bin/ 输入： keytool -genkey -alias tomcat -keyalg RSA -keystore tomcat.keystore
到D:\Tomcat 5.0\conf目录下输入： keytool -genkey -alias tomcat -keyalg RSA -keystore tomcat.keystore
输入keystore密码： changeit
您的名字与姓氏是什么？
： localhost
您的组织单位名称是什么？
： huawei
您的组织名称是什么？
： hell
您所在的城市或区域名称是什么？
： hangzhou
您所在的州或省份名称是什么？
： zhejiang
该单位的两字母国家代码是什么
： ch
CN=localhost, OU=wict, O=hell, L=wuhan, ST=hubei, C=ch 正确吗？
[否]： y
输入 <tomcat> 的主密码
（如果和 keystore 密码相同，按回车）： 这里我按了回车
2. Copy the keystore file to CATALINA_HOME/conf 拷贝到tomcat的conf下
3. Uncomment the "SSL HTTP/1.1 Connector " entry in $CATALINA_HOME/conf/server.xml. Your entry should look like:
<!-- Define a SSL Coyote HTTP/1.1 Connector on port 8443 -->
<!---->
<Connector port="8443" maxHttpHeaderSize="8192"
maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" disableUploadTimeout="true"
acceptCount="100" scheme="https" secure="true"
clientAuth="false" sslProtocol="TLS"
keystoreFile= "/conf/tomcat.keystore "
truststoreFile= "/conf/tomcat.keystore "/>
添加后保存，浏览其中输入以下地址访问tomcat首页 https://localhost:8443
4. Copy the keystore file to the default file location of the Java Applications, then run the Java Application。 拷贝到工程目录下，注意，直接再工程这级目录下面。
5、java代码：
public static void main(String[] args) throws Exception {//serverkeys是通过keytool生成的自己的证书 System.setProperty( "javax.net.ssl.trustStore", "tomcat.keystore"); System.setProperty( "javax.net.ssl.trustStorePassword", "changeit");//connect to https https://www.sun.comURL url = new URL( "https://localhost:8443"); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod( "POST"); connection.setDoOutput(true);connection.setDoInput(true);System.out.println( "1--Conected to "+ connection.toString()); DataOutputStream(connection.getOutputStream()); StringBuffer outbuff = new StringBuffer(); BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream())); String line; while ((line = in.readLine()) != null) { outbuff.append(line); } in.close(); System.out.println( "3---Test : " + outbuff.toString()); }
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