1. 找到junit
IDEA Junit測試報錯：java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing 2. 右鍵編輯
IDEA Junit測試報錯：java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing 3. 最左邊+号
IDEA Junit測試報錯：java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing 4. 找到hamcrest-core-1.3.jar
IDEA Junit測試報錯：java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing 5.點選OK 搞定
