idea编译报错 静态Map初始化报错java.lang.ExceptionInInitializerError
package cc.mrbird.utils; import java.util.HashMap; import java.util.Map; /** * ExceptionInInitializerError,这个错误是说变量初始化出现问题,后来经过仔细排查,是在静态类中使用了未初始化的变量,导致空指针,才报的这个错。 * java.lang.ExceptionInInitializerError */ public class TestCodeConf { public static Map<String,String> codeMap = new HashMap<String,String>(){ { //java.lang.ExceptionInInitializerError 报错 // codeMap.put("1010100","北京分公司"); //解决方法: put("1010100","beijing"); } }; public static String getCodeCityName(String code) { String branceCodeCityName = null; branceCodeCityName = codeMap.get(code); if(branceCodeCityName == null){ branceCodeCityName = code; } return branceCodeCityName; } public static void main(String[] args) { System.out.println("取值="+TestCodeConf.getCodeCityName("1010100")); System.out.println("取值="+TestCodeConf.getCodeCityName("1010102")); } }