powerdesigner 连接mysql提示“connection test failed”

powerdesigner  连接mysql提示“connection test failed”，该如何解决：

1、把64位的jdk换成32位的jdk

2、系统变量：
  CLASSPATH = E:\Workspaces\my-jar\mysql-connector-java-5.1.7-bin.jar
  Path = D:\Java\jdk1.6.0_13\bin;
  JAVA_HOME = D:\Java\jdk1.6.0_13\;

3、PowerDesigner Tools --> General Options --> Variables：
  JAR D:\Java\jdk1.6.0_13\bin\jar.exe
  JAVA D:\Java\jdk1.6.0_13\bin\java.exe
  JAVAC D:\Java\jdk1.6.0_13\bin\javac.exe
  JAVADOC D:\Java\jdk1.6.0_13\bin\javadoc.exe

截图：