ExceptionUtils.java
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package com.java110.utils.exception;
import com.java110.utils.util.StringUtil;
import org.springframework.util.ObjectUtils;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
/**
* Created by wuxw on 2018/4/14.
*/
public class ExceptionUtils {
public static Throwable resolveActualException(Throwable t)
{
Throwable cause = t;
while (cause != null) {
if (ObjectUtils.nullSafeClassName(cause).startsWith("com.java110.")) {
return cause;
}
cause = cause.getCause();
}
return cause;
}
public static void rethrowException(Throwable t) {
if ((t instanceof RuntimeException)) {
throw ((RuntimeException)t);
}
throw new RuntimeException(t);
}
public static String populateExecption(Throwable t)
{
return populateExecption(t, 2000);
}
public static String populateExecption(Throwable t, int descLimit) {
if (t != null) {
String message = "";
StringWriter writer = null;
PrintWriter pw = null;
try{
writer = new StringWriter();
pw = new PrintWriter(writer);
t.printStackTrace(pw);
message = writer.toString();
} finally {
if(pw != null) {
pw.close();
}
if(writer != null) {
try {
writer.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return StringUtil.truncateMessage(message, descLimit);
}
return null;
}
/**
* 创建异常堆栈信息
* @param message
* @param cause
* @return
*/
public static String buildMessage(String message, Throwable cause) {
if (cause != null) {
StringBuilder buf = new StringBuilder();
if (message != null) {
buf.append(message).append("; ");
}
buf.append("nested exception is ").append(cause);
return buf.toString();
}
else {
return message;
}
}
}