java开发工具IDEA安装以及使用

从事 java 开发工作两年，对 java 的开发工具 IDEA 是最为满意，编辑、编译、UT\CT全部本地搞定。下面简单介绍 IDEA 的安装与使用。

Step 1: 官网下载 IDEA 软件安装包，选择免费的开源版本，手动安装；

Step 2:下载 JDK

用 IDEA 创建 project,要想完成编译必须下载 jDK，并且安装，如安装在以下目录 C:\Program Files\Java\jdk-11.0.1 在IDEA configure 好，可能遇到一系列问题。

ERROR 1: Connect to repo.maven.apache.org:443

[ERROR] Plugin org.springframework.boot:spring-boot-maven-plugin:1.5.4.RELEASE or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.springframework.boot:spring-boot-maven-plugin:jar:1.5.4.RELEASE: Could not transfer artifact org.springframework.boot:spring-boot-maven-plugin:pom:1.5.4.RELEASE from/to central (https://repo.maven.apache.org/maven2): Connect to repo.maven.apache.org:443 [repo.maven.apache.org/151.101.196.215] failed: Connection timed out: connect -> [Help 1]
    [ERROR] 
    [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
    [ERROR] Re-run Maven using the -X switch to enable full debug logging.
    [ERROR] 
    [ERROR] For more information about the errors and possible solutions, please read the following articles:
    [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException

修改 setting.xml 解决：

打开自己的maven的setting配置文件

根据 User setting file 提供的路径打开 setting.xml,如果此文件不存在，可以创建一个，内容如下：

<?xml version="1.0" encoding="UTF-8"?>
<settings xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/SETTINGS/1.0.0">
      <proxies>
          <proxy>
              <id>optional</id>
              <active>true</active>
              <protocol>http</protocol>
              <username>proxyuser</username>
              <password>proxypass</password>
              <host>10.144.1.10</host>
              <port>8080</port>
              <nonProxyHosts>*.nokia.com</nonProxyHosts>
          </proxy>
      </proxies>
      <servers>
          <server>
              <id>deploymentRepo</id>
              <username>anonymous</username>
              <password>anonymous</password>
          </server>
      </servers>
  </settings>

加入如下节点，保存；

<mirrors>
            <mirror>
                <id>osc</id>
                <mirrorOf>*</mirrorOf>
                <url>http://maven.oschina.net/content/groups/public/</url>
            </mirror>
        </mirrors>

然后 重新编译,即可成功！如果依旧没有成功，把刚刚添加的 <mirrors>节点内容全部删掉，重新更新maven依赖，然后重新编译，这个问题就没有了。

ERROR 2: SDK 版本不匹配

Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project FileSystem: Compilation failure: Compilation failure:

jdk-11.0.1 太新了，卸载掉，安装 jdk-8u92-windows-x64.exe

根据下面提示的信息中重新设置 JDK

Maven 3.3.1+ requires JDK 1.7+. Please set appropriate JDK at Settings | Build, Execution, Deployment | Build Tools | Maven | Runner | JRE

ERROR 3：plugin 无法下载

设置代理，File->Settings->Plugins, 点击Updates右边的符号，选择 Http Proxy Settings

ERROR 4: SNAPSHOT dependency 的错误

Failed to execute goal on project Harmonization-API: Could not resolve dependencies for project com.nokia.imp:Harmonization-API:jar:2.0.0-SNAPSHOT: Could not find artifact com.nokia.imp:MappingGenerator-API:jar:2.0.0-SNAPSHOT -> [Help 1]

勾选 SE,如下：

ERROR 5: svn 下载失败

安装的时候注意勾选 command line

ERROR 6: CMake 问题

CMake was unable to find a build program corresponding to "Unix Makefiles".  CMAKE_MAKE_PROGRAM is not set

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