我在控制面板的“系统”中的环境变量中创建了两个新变量,一个用于用户变量,一个用于系统变量。它们都被命名为JAVA_HOME,并且都指向
C: \ Sun jdk \ SDK \ \ bin
但出于某种原因,我在运行Java命令时仍然会得到以下错误…
BUILD FAILED
C:\Users\Derek\Desktop\eclipse\eclipse\glassfish\setup.xml:161: The following error occurred while executing this line:
C:\Users\Derek\Desktop\eclipse\eclipse\glassfish\setup.xml:141: The following error occurred while executing this line:
C:\Users\Derek\Desktop\eclipse\eclipse\glassfish\setup.xml:137: Please set java.home to a JDK installation
Total time: 1 second
C:\Users\Derek\Desktop\eclipse\eclipse\glassfish>lib\ant\bin\ant -f setup.xml
Unable to locate tools.jar. Expected to find it in C:\Program Files\Java\jre6\lib\tools.jar
Buildfile: setup.xml
我该如何解决这个问题?
你可能想在Windows/System32文件夹中找到以下文件:
——java.exe
——javaw.exe
——javaws.exe
Because, the path variable is including these files, you can get a headache trying to figure out why the java -version or javac -version keeps pointing to the old JAVA_HOME: rename those files, take out the extension with an underscore, for instance. And then, you only will have to create the JAVA_HOME variable, add it to the path variable (e.g., %JAVA_HOME%) and append the "\bin" particle. This way you need to only change the JAVA_HOME variable pointing to different JRE or JDK and have multiple installations of java just by setting JAVA_HOME.
这也意味着最好手动安装Java,不需要安装程序,这样您就可以随意使用它。
如果安装JDK后没有重新启动计算机,请重新启动计算机。
如果你想在使用Java之前制作一个可移植的Java并设置路径,只需制作一个我下面解释的批处理文件。
如果您想在计算机启动时运行此批处理文件,只需将批处理文件快捷方式放在启动文件夹中。在windows 7的启动文件夹是“C:\Users\user\AppData\漫游\Microsoft\ windows \开始菜单\程序\启动”
做一个这样的批处理文件:
set Java_Home=C:\Program Files\Java\jdk1.8.0_11
set PATH=%PATH%;C:\Program Files\Java\jdk1.8.0_11\bin
注意:
Java_home和path是变量。你可以随意设置任何变量。
例如,设置amir=good_boy,你可以通过%amir%看到amir,或者通过%java_home%看到java_home
你可能想在Windows/System32文件夹中找到以下文件:
——java.exe
——javaw.exe
——javaws.exe
Because, the path variable is including these files, you can get a headache trying to figure out why the java -version or javac -version keeps pointing to the old JAVA_HOME: rename those files, take out the extension with an underscore, for instance. And then, you only will have to create the JAVA_HOME variable, add it to the path variable (e.g., %JAVA_HOME%) and append the "\bin" particle. This way you need to only change the JAVA_HOME variable pointing to different JRE or JDK and have multiple installations of java just by setting JAVA_HOME.
这也意味着最好手动安装Java,不需要安装程序,这样您就可以随意使用它。