IDEA上安装和使用checkstyle,findbugs,visualVM,PMD插件

#安装插件步骤：

1.打开settings

2.选择plugins

<iframe id="iframe_0.918739736047133" style="margin: 0px; padding: 0px; border-width: initial; border-style: none; width: 707px; height: 477px;" src="data:text/html;charset=utf8,%3Cstyle%3Ebody%7Bmargin:0;padding:0%7D%3C/style%3E%3Cimg%20id=%22img%22%20src=%22https://raw.githubusercontent.com/chuxiuhong/cloudphoto/master/Lab4_1.png?_=5953498%22%20style=%22border:none;max-width:707px%22%3E%3Cscript%3Ewindow.onload%20=%20function%20()%20%7Bvar%20img%20=%20document.getElementById('img');%20window.parent.postMessage(%7BiframeId:'iframe_0.918739736047133',width:img.width,height:img.height%7D,%20'http://www.cnblogs.com');%7D%3C/script%3E" frameborder="0" scrolling="no"></iframe>

3.点击"Browse repositories"

<iframe id="iframe_0.9422785380441556" style="margin: 0px; padding: 0px; border-width: initial; border-style: none; width: 707px; height: 469px;" src="data:text/html;charset=utf8,%3Cstyle%3Ebody%7Bmargin:0;padding:0%7D%3C/style%3E%3Cimg%20id=%22img%22%20src=%22https://raw.githubusercontent.com/chuxiuhong/cloudphoto/master/Lab4_2.png?_=5953498%22%20style=%22border:none;max-width:707px%22%3E%3Cscript%3Ewindow.onload%20=%20function%20()%20%7Bvar%20img%20=%20document.getElementById('img');%20window.parent.postMessage(%7BiframeId:'iframe_0.9422785380441556',width:img.width,height:img.height%7D,%20'http://www.cnblogs.com');%7D%3C/script%3E" frameborder="0" scrolling="no"></iframe>

4.搜索对应内插件，点击"install"

到这里我们默认已经完成了4个插件的安装。
checkstyle,PMD,findbugs都可以直接使用，但VsiualVM需要配合客户端来完成配置和使用。

下面先去官网下载VisualVM的客户端。

VisualVM官网链接

配置连接过程如下

打开settings->Other Settings
<iframe id="iframe_0.41228751700412647" style="margin: 0px; padding: 0px; border-width: initial; border-style: none; width: 707px; height: 474px;" src="data:text/html;charset=utf8,%3Cstyle%3Ebody%7Bmargin:0;padding:0%7D%3C/style%3E%3Cimg%20id=%22img%22%20src=%22https://raw.githubusercontent.com/chuxiuhong/cloudphoto/master/Lab4_4.png?_=5953498%22%20style=%22border:none;max-width:707px%22%3E%3Cscript%3Ewindow.onload%20=%20function%20()%20%7Bvar%20img%20=%20document.getElementById('img');%20window.parent.postMessage(%7BiframeId:'iframe_0.41228751700412647',width:img.width,height:img.height%7D,%20'http://www.cnblogs.com');%7D%3C/script%3E" frameborder="0" scrolling="no"></iframe>
-------
点击"Browse"
<iframe id="iframe_0.939138330035169" style="margin: 0px; padding: 0px; border-width: initial; border-style: none; width: 707px; height: 470px;" src="data:text/html;charset=utf8,%3Cstyle%3Ebody%7Bmargin:0;padding:0%7D%3C/style%3E%3Cimg%20id=%22img%22%20src=%22https://raw.githubusercontent.com/chuxiuhong/cloudphoto/master/Lab4_5.png?_=5953498%22%20style=%22border:none;max-width:707px%22%3E%3Cscript%3Ewindow.onload%20=%20function%20()%20%7Bvar%20img%20=%20document.getElementById('img');%20window.parent.postMessage(%7BiframeId:'iframe_0.939138330035169',width:img.width,height:img.height%7D,%20'http://www.cnblogs.com');%7D%3C/script%3E" frameborder="0" scrolling="no"></iframe>

在打开的页面内选择已经解压好的文件夹中的bin文件夹内的"VisualVM.exe"

##checkstyle使用

1.安装完之后，我们打开checkstyles，点击绿色箭头

2.出现提示"No rules file has been configured"，这是提醒我们没有为其指定配置文件，它不知道应该按照什么标准来评判代码的风格

3.解决办法：打开settings->Other Settings->Checkstyle ，选定默认的配置文件。

4.回到步骤一的页面，重新运行checkstyles
，得到检查错误。通过点击不同的感叹号可以选定观察不同优先级的错误。
-------
<iframe id="iframe_0.20734662964269557" style="margin: 0px; padding: 0px; border-width: initial; border-style: none; width: 707px; height: 176px;" src="data:text/html;charset=utf8,%3Cstyle%3Ebody%7Bmargin:0;padding:0%7D%3C/style%3E%3Cimg%20id=%22img%22%20src=%22https://raw.githubusercontent.com/chuxiuhong/cloudphoto/master/Lab4_9.png?_=5953498%22%20style=%22border:none;max-width:707px%22%3E%3Cscript%3Ewindow.onload%20=%20function%20()%20%7Bvar%20img%20=%20document.getElementById('img');%20window.parent.postMessage(%7BiframeId:'iframe_0.20734662964269557',width:img.width,height:img.height%7D,%20'http://www.cnblogs.com');%7D%3C/script%3E" frameborder="0" scrolling="no"></iframe>

FindBugs的使用

1.在代码编辑页面点击右键，根据检查对象的不同选择不同选项。

2.得到检查结果

##PMD的使用

1.在代码编辑区点击右键，根据项目不同选择不同的检查规则集

2.在下方按照不同规则集显示出不同位置的错误，通过规则名就可以得知代码的问题类型

##VisualVM的使用

1.在代码编辑区点击右键，如图选择

<iframe id="iframe_0.39601137654247176" style="margin: 0px; padding: 0px; border-width: initial; border-style: none; width: 707px; height: 311px;" src="data:text/html;charset=utf8,%3Cstyle%3Ebody%7Bmargin:0;padding:0%7D%3C/style%3E%3Cimg%20id=%22img%22%20src=%22https://raw.githubusercontent.com/chuxiuhong/cloudphoto/master/Lab4_14.png?_=5953498%22%20style=%22border:none;max-width:707px%22%3E%3Cscript%3Ewindow.onload%20=%20function%20()%20%7Bvar%20img%20=%20document.getElementById('img');%20window.parent.postMessage(%7BiframeId:'iframe_0.39601137654247176',width:img.width,height:img.height%7D,%20'http://www.cnblogs.com');%7D%3C/script%3E" frameborder="0" scrolling="no"></iframe>

2.这时会触发VisualVM客户端，可以观察项目内的性能使用情况

苍生苦难，不知伊于胡底