半年没玩mc了，最近重新开始玩了起来，64位win10系统，然后安装java的时候到最后就会提示两次应用程序错误
第一次错误
java.lang.IllegalArgumentException: Invalid characters in hostname
        at java.net.HostPortrange.toLowerCase(Unknown Source)
        at java.net.HostPortrange.<init>(Unknown Source)
        at java.net.URLPermission$Authority.<init>(Unknown Source)
        at java.net.URLPermission.parseURI(Unknown Source)
        at java.net.URLPermission.init(Unknown Source)
        at java.net.URLPermission.<init>(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.URLtoSocketPermission(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(Unknown Source)
        at java.net.URLConnection.getContentType(Unknown Source)
        at com.sun.deploy.net.proxy.AbstractAutoProxyHandler.isSupportedINSFile(Unknown Source)
        at com.sun.deploy.net.proxy.AbstractAutoProxyHandler.retrieveContentOfPACFile(Unknown Source)
        at com.sun.deploy.net.proxy.AbstractAutoProxyHandler.contructLegacyPACScript_16(Unknown Source)
        at com.sun.deploy.net.proxy.AbstractAutoProxyHandler.init(Unknown Source)
        at com.sun.deploy.net.proxy.SunAutoProxyHandler.init(Unknown Source)
        at com.sun.deploy.net.proxy.DynamicProxyManager.reset(Unknown Source)
        at com.sun.deploy.net.proxy.DeployProxySelector.reset(Unknown Source)
        at com.sun.javaws.Main.initializeExecutionEnvironment(Unknown Source)
        at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
        at com.sun.javaws.Main.access$000(Unknown Source)
        at com.sun.javaws.Main$1.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)

第二次错误
java.lang.IllegalArgumentException: Invalid characters in hostname
        at java.net.HostPortrange.toLowerCase(Unknown Source)
        at java.net.HostPortrange.<init>(Unknown Source)
        at java.net.URLPermission$Authority.<init>(Unknown Source)
        at java.net.URLPermission.parseURI(Unknown Source)
        at java.net.URLPermission.init(Unknown Source)
        at java.net.URLPermission.<init>(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.URLtoSocketPermission(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(Unknown Source)
        at java.net.URLConnection.getContentType(Unknown Source)
        at com.sun.deploy.net.proxy.AbstractAutoProxyHandler.isSupportedINSFile(Unknown Source)
        at com.sun.deploy.net.proxy.AbstractAutoProxyHandler.retrieveContentOfPACFile(Unknown Source)
        at com.sun.deploy.net.proxy.AbstractAutoProxyHandler.contructLegacyPACScript_16(Unknown Source)
        at com.sun.deploy.net.proxy.AbstractAutoProxyHandler.init(Unknown Source)
        at com.sun.deploy.net.proxy.SunAutoProxyHandler.init(Unknown Source)
        at com.sun.deploy.net.proxy.DynamicProxyManager.reset(Unknown Source)
        at com.sun.deploy.net.proxy.DeployProxySelector.reset(Unknown Source)
        at com.sun.javaws.Main.initializeExecutionEnvironment(Unknown Source)
        at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
        at com.sun.javaws.Main.access$000(Unknown Source)
        at com.sun.javaws.Main$1.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)

之后用HMCL启动，后台会检测到java运行并占用大量CPU和运存，然后在短时间内java就会结束运行，而且并没有产生错误报告
接着我用换了一个启动器，结果和上面完全一样
之后我又尝试卸载java8，用官方正版的启动器自带的运行环境运行，然后提示未知错误。
求解释一下到底该怎么搞？

Invalid characters in hostname

你的Java是安装在默认的路径上的么，如果没有的话，路径上是否有中文或者什么非法的字符

换java7试试

你是不是自己的机器名中有中文啊？

就是默认路径，C:/program files/java

记得是从1.7还是1.8开始就不支持java7了吧

JavaRa卸载然后安装试试，不行的话找个绿色版java8