JDK异常处理No appropriate protocol

异常展示

javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate)
        at sun.security.ssl.HandshakeContext.<init>(HandshakeContext.java:171) ~[na:1.8.0_292]
        at sun.security.ssl.ClientHandshakeContext.<init>(ClientHandshakeContext.java:98) ~[na:1.8.0_292]
        at sun.security.ssl.TransportContext.kickstart(TransportContext.java:220) ~[na:1.8.0_292]
        at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:428) ~[na:1.8.0_292]
        at org.apache.http.conn.ssl.SSLConnectionSocketFactory.createLayeredSocket(SSLConnectionSocketFactory.java:275) ~[httpclient-4.3.2.jar:4.3.2]
        at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:254) ~[httpclient-4.3.2.jar:4.3.2]
        at org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:118) ~[httpclient-4.3.2.jar:4.3.2]
        at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:314) ~[httpclient-4.3.2.jar:4.3.2]
        at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:363) ~[httpclient-4.3.2.jar:4.3.2]
        at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:219) ~[httpclient-4.3.2.jar:4.3.2]
        at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195) ~[httpclient-4.3.2.jar:4.3.2]
        at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:85) ~[httpclient-4.3.2.jar:4.3.2]
        at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108) ~[httpclient-4.3.2.jar:4.3.2]

分析: 倘若是2021年5月后安装的jdk,最新版jdk不支持ssl 解决办法

找到jdk 1.8安装目录，找到C:Program FilesJavajre里面的libsecurity 下面有个java.security。找到对应的SSLv3，删除掉，重启项目就好了。（删掉SSLv3就是允许SSL调用）

红框中的全部删除掉即可通过SSL调用

处理JDK相关的linux命令

查询系统自带的jdk包括自己安装的openjdk

rpm -qa | grep java

删除自带的jdk或者自己安装的openjdk

rpm -e --nodeps java-1.7.0-openjdk-1.7.0.111-2.6.7.8.el7.x86_64

命令介绍：
rpm 　　　　管理套件  
-e　　　　　删除指定的套件
--nodeps　　不验证套件档的相互关联性

JDK相关版本下载

安装

1.将安装包上传到服务器例如 /opt/java 文件夹下 2.解压 3.配置环境文件

export JAVA_HOME=/opt/java/jdk1.8.0_281
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:{JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH

4.使环境文件生效

source /etc/profile