折腾：
【未解决】java的com.iec.analysis.解析104出错：类型标识出错，无法解析信息对象
期间，对于代码：
builder.append("类属性标识符[7 byte]:").append(TypeIdentifier.getDescribe(asdu[0])).append("\n");希望变成：
目前的getDescribe
...
public enum TypeIdentifier {
M_SP_NA_1(1, "0x01", "Single-point information"),
M_SP_TA_1(2, "0x02", "Single-point information with time tag"),
...
F_DR_TA_1(126, "0x7E", "Directory");
private int code;
private String hexStr;
private String describe;
TypeIdentifier(int code, String hexStr, String describe) {
this.code = code;
this.hexStr = hexStr;
this.describe = describe;
}
public static String getDescribe(int code) throws UnknownTypeIdentifierException {
for (TypeIdentifier value : TypeIdentifier.values()) {
if (value.code == code) {
// String idDesc = value.hexStr + " " + value.describe;
String idDesc = String.format("%s %s", value.hexStr, value.describe);
return idDesc;
}
}
throw new UnknownTypeIdentifierException(code);
}
}
此处想要改造成：
直接从枚举的值，即code，解析返回出对应的枚举变量：
java from value get enum
试试：
public static TypeIdentifier fromCode(int code){
for(TypeIdentifier curValue : TypeIdentifier.values()){
if(code == curValue.code) {
return curValue;
}
}
return null;
}然后就可以了：
【总结】
此处给enum弄个函数，比如叫fromCode，然后内部用到.values()去匹配，返回对应的enum变量。
完整代码：
public enum TypeIdentifier {
M_SP_NA_1(1, "0x01", "Single-point information"),
M_SP_TA_1(2, "0x02", "Single-point information with time tag"),
...
F_DR_TA_1(126, "0x7E", "Directory");
private int code;
private String hexStr;
private String describe;
TypeIdentifier(int code, String hexStr, String describe) {
this.code = code;
this.hexStr = hexStr;
this.describe = describe;
}
public static TypeIdentifier fromCode(int code){
for(TypeIdentifier curValue : TypeIdentifier.values()){
if(code == curValue.code) {
return curValue;
}
}
return null;
}
...
}然后调用时：
private TypeIdentifier typeId;
...
public static String ASDU_analysis(int[] asdu) throws xxx {
ASDU curAsdu = new ASDU();
curAsdu.typeId = TypeIdentifier.fromCode(asdu[0]);
// return curAsdu;即可。
转载请注明：在路上 » 【已解决】Java中如何枚举的值返回对应枚举变量本身