2018-01-30发表2023-10-18更新Java / Tomcat2 分钟读完 (大约299个字)

Tomcat信任https网站

在使用微信发送告警的时候出现无法使用https网址的问题，解决方式如下

导出微信的证书

openssl s_client -connect qyapi.weixin.qq.com:443 2>&1 |sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > weixin.crt

使用SSLPoke.class确认是否还有上层证书，如果存在也导入

java -Djavax.net.debug=ssl SSLPoke qyapi.weixin.qq.com 443

看到有类似下面的则表明有上层证书:

AuthorityInfoAccess [
  [
   accessMethod: ocsp
   accessLocation: URIName: http://gn.symcd.com
,
   accessMethod: caIssuers
   accessLocation: URIName: http://gn.symcb.com/gn.crt
]
]

将http://gn.symcb.com/gn.crt下载下来，并导入
sudo keytool -import -v -trustcacerts -alias gnsymcb -keystore $JAVA_HOME/jre/lib/security/jssecacerts -file gn.crt

导入到jdk中

sudo keytool -import -v -trustcacerts -alias qyapiweixin -keystore $JAVA_HOME/jre/lib/security/jssecacerts -file weixin.crt

更新证书

需要先删除再导入新的

1
2

sudo keytool -delete -keystore $JAVA_HOME/jre/lib/security/cacerts -alias qyapiweixin    
sudo keytool -import -v -trustcacerts -alias qyapiweixin -keystore $JAVA_HOME/jre/lib/security/cacerts -file weixin.crt

指定tomcat使用证书(非必须)

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2

vim /usr/local/apache-tomcat-8.5.6/bin/setenv.sh
JAVA_OPTS="-Djava.awt.headless=true -Dfile.encoding=UTF-8 -server -Xms2048m -Xmx2048m -XX:NewSize=512m -XX:MaxNewSize=512m -XX:PermSize=512m -XX:MaxPermSize=512m -XX:+DisableExplicitGC -Djavax.net.ssl.trustStore=/usr/local/java/jdk8/jre/lib/security/jssecacerts"

或者在 /usr/local/apache-tomcat-8.5.6/conf/server.xml的ssl配置部分指定keystore，如下

<Connector port="443" protocol="org.apache.coyote.http11.Http11Protocol"
              maxThreads="150" SSLEnabled="true" scheme="https" secure="true"
              clientAuth="false" sslProtocol="TLS"
              URIEncoding="utf-8"
              keystoreFile="/usr/local/java/jdk7/jre/lib/security/jssecacerts"
              keystorePass="yourpassword"
              />

2017-08-21发表2023-10-18更新Java / Python1 分钟读完 (大约185个字)

Java与Python安全转码链接

Java

String OriginUrl = "https://meijumao.cn/yunparse/index.php?url=//美剧/周一/GOT权游/S07/Online/02按时发达的十分.mp4~bdyun";
URL repoUrl = new URL(OriginUrl);
URI uri;
try {
    uri = new URI(repoUrl.getProtocol(), repoUrl.getUserInfo(), repoUrl.getHost(), repoUrl.getPort(), repoUrl.getPath(), repoUrl.getQuery(), repoUrl.getRef());
    System.out.println(uri.toASCIIString());
} catch (URISyntaxException e) {
}

Python

python3:

import string
import urllib.parse

url = "https://meijumao.cn/yunparse/index.php?url=//美剧/周一/GOT权游/S07/Online/02按时发达的十分.mp4~bdyun"
print(urllib.parse.quote(url,safe=string.printable))

python2:

import string
from urllib import quote

url = "https://meijumao.cn/yunparse/index.php?url=//美剧/周一/GOT权游/S07/Online/02按时发达的十分.mp4~bdyun"
print urllib.parse.quote(url,safe=string.printable)

结果 'https://meijumao.cn/yunparse/index.php?url=//%E7%BE%8E%E5%89%A7/%E5%91%A8%E4%B8%80/GOT%E6%9D%83%E6%B8%B8/S07/Online/02%E6%8C%89%E6%97%B6%E5%8F%91%E8%BE%BE%E7%9A%84%E5%8D%81%E5%88%86.mp4~bdyun

2017-06-02发表2023-10-18更新Java几秒读完 (大约55个字)

Java 解析json数组字符串为Java对象

套用罗锤子的话：这可能是最方便快捷的方式了

json字符串：

[{ "number" : "3",
  "title" : "hello_world"  
},
{ "number" : "2",
  "title" : "hello_world"  
}]

Java代码：

class Wrapper{
    int number;
    String title;       
}

Gson gson = new Gson();
Wrapper[] data = gson.fromJson(idcstring, Wrapper[].class);