package org.nutz.lang;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.Enumeration;
import java.util.regex.Matcher;
import javax.servlet.http.HttpServletRequest;
import org.nutz.lang.stream.StringOutputStream;
/**
* 显示对象的信息，为日志以及调试提供帮助的函数集
*
* @author zozoh(zozohtnt@gmail.com)
* @author wendal(wendal1985@gmail.com)
* @author bonyfish(mc02cxj@gmail.com)
*/
public abstract class Dumps {
/**
* 显示 Matcher 的详细信息
*
* @param m
* Matcher 对象
* @return 信息
*/
public static String matcher(Matcher m) {
StringBuilder sb = new StringBuilder();
if (m.find())
for (int i = 0; i <= m.groupCount(); i++)
sb.append(String.format("%2d: %s\n", i, m.group(i)));
else
sb.append(String.format("No found!"));
return sb.toString();
}
/**
* 显示一个对象所有个 getter 函数返回，以及 public 的 Field 的值
*
* @param obj
* 对象
* @return 信息
*/
public static String obj(Object obj) {
if (null == obj)
return "null";
StringBuilder sb = new StringBuilder(obj.getClass().getName() + "\n\n[Fields:]");
Mirror<?> mirror = Mirror.me(obj.getClass());
for (Field f : mirror.getType().getFields())
if (Modifier.isPublic(f.getModifiers()))
try {
sb.append(String.format("\n\t%10s : %s", f.getName(), f.get(obj)));
}
catch (Exception e1) {
sb.append(String.format("\n\t%10s : %s", f.getName(), e1.getMessage()));
}
sb.append("\n\n[Methods:]");
for (Method m : mirror.getType().getMethods())
if (Modifier.isPublic(m.getModifiers()))
if (m.getName().startsWith("get"))
if (m.getParameterTypes().length == 0)
try {
sb.append(String.format("\n\t%10s : %s", m.getName(), m.invoke(obj)));
}
catch (Exception e) {
sb.append(String.format("\n\t%10s : %s", m.getName(), e.getMessage()));
}
return sb.toString();
}
/**
* 显示 HTTP 内容的名称空间
*/
public static class HTTP {
public static enum MODE {
ALL, HEADER_ONLY, BODY_ONLY
}
/**
* 详细显示一个 HTTP 请求的全部内容
*
* @param req
* 请求对象
* @param ops
* 内容的输出流
* @param mode
* 显示 HTTP 头信息的模式: MODE.ALL or MODE.HEADER_ONLY
*/
public static void http(HttpServletRequest req, OutputStream ops, MODE mode) {
InputStream ins;
int b;
try {
/*
* Header
*/
if (MODE.ALL == mode || MODE.HEADER_ONLY == mode) {
StringBuilder sb = new StringBuilder();
Enumeration<?> ens = req.getHeaderNames();
while (ens.hasMoreElements()) {
String name = ens.nextElement().toString();
sb.append(name).append(": ").append(req.getHeader(name)).append("\r\n");
}
sb.append("\r\n");
ins = Lang.ins(sb);
while (-1 != (b = ins.read()))
ops.write(b);
}
/*
* Body
*/
if (MODE.ALL == mode || MODE.BODY_ONLY == mode) {
ins = req.getInputStream();
while (-1 != (b = ins.read()))
ops.write(b);
ins.close();
}
ops.flush();
ops.close();
}
catch (IOException e) {
throw Lang.wrapThrow(e);
}
}
/**
* 详细显示一个 HTTP 请求的全部内容
*
* @param req
* 请求对象
* @param mode
* 显示 HTTP 头信息的模式: MODE.ALL or MODE.HEADER_ONLY
* @return 一个文本字符串表示 HTTP 的全部内容
*/
public static String http(HttpServletRequest req, MODE mode) {
StringBuilder sb = new StringBuilder();
OutputStream ops = new StringOutputStream(sb, req.getCharacterEncoding());
http(req, ops, mode);
return sb.toString();
}
public static void body(HttpServletRequest req, OutputStream ops) {
http(req, ops, MODE.BODY_ONLY);
}
public static String body(HttpServletRequest req) {
return http(req, MODE.BODY_ONLY);
}
public static void header(HttpServletRequest req, OutputStream ops) {
http(req, ops, MODE.HEADER_ONLY);
}
public static String header(HttpServletRequest req) {
return http(req, MODE.HEADER_ONLY);
}
public static void all(HttpServletRequest req, OutputStream ops) {
http(req, ops, MODE.ALL);
}
public static String all(HttpServletRequest req) {
return http(req, MODE.ALL);
}
}
}