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com.pamirs.pradar.json.ResultSerializer Maven / Gradle / Ivy
package com.pamirs.pradar.json;
import com.pamirs.pradar.common.ToStringStyle;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.lang.reflect.Field;
import java.text.SimpleDateFormat;
import java.util.*;
import static java.lang.String.format;
/**
* @author fabing.zhaofb
*/
public abstract class ResultSerializer {
private final static String TAB = " ";
private final static Map ASCII_MAP = new HashMap();
static {
ASCII_MAP.put((byte) 0, "NUL");
ASCII_MAP.put((byte) 1, "SOH");
ASCII_MAP.put((byte) 2, "STX");
ASCII_MAP.put((byte) 3, "ETX");
ASCII_MAP.put((byte) 4, "EOT");
ASCII_MAP.put((byte) 5, "ENQ");
ASCII_MAP.put((byte) 6, "ACK");
ASCII_MAP.put((byte) 7, "BEL");
ASCII_MAP.put((byte) 8, "BS");
ASCII_MAP.put((byte) 9, "HT");
ASCII_MAP.put((byte) 10, "LF");
ASCII_MAP.put((byte) 11, "VT");
ASCII_MAP.put((byte) 12, "FF");
ASCII_MAP.put((byte) 13, "CR");
ASCII_MAP.put((byte) 14, "SO");
ASCII_MAP.put((byte) 15, "SI");
ASCII_MAP.put((byte) 16, "DLE");
ASCII_MAP.put((byte) 17, "DC1");
ASCII_MAP.put((byte) 18, "DC2");
ASCII_MAP.put((byte) 19, "DC3");
ASCII_MAP.put((byte) 20, "DC4");
ASCII_MAP.put((byte) 21, "NAK");
ASCII_MAP.put((byte) 22, "SYN");
ASCII_MAP.put((byte) 23, "ETB");
ASCII_MAP.put((byte) 24, "CAN");
ASCII_MAP.put((byte) 25, "EM");
ASCII_MAP.put((byte) 26, "SUB");
ASCII_MAP.put((byte) 27, "ESC");
ASCII_MAP.put((byte) 28, "FS");
ASCII_MAP.put((byte) 29, "GS");
ASCII_MAP.put((byte) 30, "RS");
ASCII_MAP.put((byte) 31, "US");
ASCII_MAP.put((byte) 127, "DEL");
}
private static void renderObject(Object obj, int deep, int expand, final StringBuilder buf) {
if (null == obj) {
appendStringBuilder(buf, "null");
} else {
final Class clazz = obj.getClass();
final String className = clazz.getSimpleName();
// 7种基础类型,直接输出@类型[值]
if (Integer.class.isInstance(obj)
|| Long.class.isInstance(obj)
|| Float.class.isInstance(obj)
|| Double.class.isInstance(obj)
// || Character.class.isInstance(obj)
|| Short.class.isInstance(obj)
|| Byte.class.isInstance(obj)
|| Boolean.class.isInstance(obj)) {
appendStringBuilder(buf, format("@%s[%s]", className, obj));
}
// Char要特殊处理,因为有不可见字符的因素
else if (Character.class.isInstance(obj)) {
final Character c = (Character) obj;
// ASCII的可见字符
if (c >= 32
&& c <= 126) {
appendStringBuilder(buf, format("@%s[%s]", className, c));
}
// ASCII的控制字符
else if (ASCII_MAP.containsKey((byte) c.charValue())) {
appendStringBuilder(buf, format("@%s[%s]", className, ASCII_MAP.get((byte) c.charValue())));
}
// 超过ASCII的编码范围
else {
appendStringBuilder(buf, format("@%s[%s]", className, c));
}
}
// 字符串类型单独处理
else if (String.class.isInstance(obj)) {
appendStringBuilder(buf, "@");
appendStringBuilder(buf, className);
appendStringBuilder(buf, "[");
for (Character c : ((String) obj).toCharArray()) {
switch (c) {
case '\n':
appendStringBuilder(buf, "\\n");
break;
case '\r':
appendStringBuilder(buf, "\\r");
break;
default:
appendStringBuilder(buf, c.toString());
}//switch
}//for
appendStringBuilder(buf, "]");
}
// 集合类输出
else if (Collection.class.isInstance(obj)) {
@SuppressWarnings("unchecked") final Collection collection = (Collection) obj;
// 非根节点或空集合只展示摘要信息
if (!isExpand(deep, expand)
|| collection.isEmpty()) {
appendStringBuilder(buf, format("@%s[isEmpty=%s;size=%d]",
className,
collection.isEmpty(),
collection.size()));
}
// 展开展示
else {
appendStringBuilder(buf, format("@%s[", className));
boolean append = false;
for (Object e : collection) {
for (int i = 0; i < deep + 1; i++) {
appendStringBuilder(buf, TAB);
}
renderObject(e, deep + 1, expand, buf);
appendStringBuilder(buf, ",");
append = true;
}
if (append) {
buf.deleteCharAt(buf.length() - 1);
}
for (int i = 0; i < deep; i++) {
appendStringBuilder(buf, TAB);
}
appendStringBuilder(buf, "]");
}
}
// Map类输出
else if (Map.class.isInstance(obj)) {
@SuppressWarnings("unchecked") final Map map = (Map) obj;
// 非根节点或空集合只展示摘要信息
if (!isExpand(deep, expand)
|| map.isEmpty()) {
appendStringBuilder(buf, format("@%s[isEmpty=%s;size=%d]",
className,
map.isEmpty(),
map.size()));
} else {
appendStringBuilder(buf, format("@%s[", className));
boolean append = false;
for (Map.Entry entry : map.entrySet()) {
for (int i = 0; i < deep + 1; i++) {
appendStringBuilder(buf, TAB);
}
renderObject(entry.getKey(), deep + 1, expand, buf);
appendStringBuilder(buf, ":");
renderObject(entry.getValue(), deep + 1, expand, buf);
appendStringBuilder(buf, ",");
append = true;
}
if (append) {
buf.deleteCharAt(buf.length() - 1);
}
for (int i = 0; i < deep; i++) {
appendStringBuilder(buf, TAB);
}
appendStringBuilder(buf, "]");
}
}
// 数组类输出
else if (obj.getClass().isArray()) {
final String typeName = obj.getClass().getSimpleName();
// int[]
if (typeName.equals("int[]")) {
final int[] arrays = (int[]) obj;
// 非根节点或空集合只展示摘要信息
if (!isExpand(deep, expand)
|| arrays.length == 0) {
appendStringBuilder(buf, format("@%s[isEmpty=%s;size=%d]",
typeName,
arrays.length == 0,
arrays.length));
}
// 展开展示
else {
appendStringBuilder(buf, format("@%s[", className));
boolean append = false;
for (int e : arrays) {
for (int i = 0; i < deep + 1; i++) {
appendStringBuilder(buf, TAB);
}
renderObject(e, deep + 1, expand, buf);
appendStringBuilder(buf, ",");
append = true;
}
if (append) {
buf.deleteCharAt(buf.length() - 1);
}
for (int i = 0; i < deep; i++) {
appendStringBuilder(buf, TAB);
}
appendStringBuilder(buf, "]");
}
}
// long[]
else if (typeName.equals("long[]")) {
final long[] arrays = (long[]) obj;
// 非根节点或空集合只展示摘要信息
if (!isExpand(deep, expand)
|| arrays.length == 0) {
appendStringBuilder(buf, format("@%s[isEmpty=%s;size=%d]",
typeName,
arrays.length == 0,
arrays.length));
}
// 展开展示
else {
appendStringBuilder(buf, format("@%s[", className));
boolean append = false;
for (long e : arrays) {
for (int i = 0; i < deep + 1; i++) {
appendStringBuilder(buf, TAB);
}
renderObject(e, deep + 1, expand, buf);
appendStringBuilder(buf, ",");
append = true;
}
if (append) {
buf.deleteCharAt(buf.length() - 1);
}
for (int i = 0; i < deep; i++) {
appendStringBuilder(buf, TAB);
}
appendStringBuilder(buf, "]");
}
}
// short[]
else if (typeName.equals("short[]")) {
final short[] arrays = (short[]) obj;
// 非根节点或空集合只展示摘要信息
if (!isExpand(deep, expand)
|| arrays.length == 0) {
appendStringBuilder(buf, format("@%s[isEmpty=%s;size=%d]",
typeName,
arrays.length == 0,
arrays.length));
}
// 展开展示
else {
appendStringBuilder(buf, format("@%s[", className));
boolean append = false;
for (short e : arrays) {
for (int i = 0; i < deep + 1; i++) {
appendStringBuilder(buf, TAB);
}
renderObject(e, deep + 1, expand, buf);
appendStringBuilder(buf, ",");
append = true;
}
if (append) {
buf.deleteCharAt(buf.length() - 1);
}
for (int i = 0; i < deep; i++) {
appendStringBuilder(buf, TAB);
}
appendStringBuilder(buf, "]");
}
}
// float[]
else if (typeName.equals("float[]")) {
final float[] arrays = (float[]) obj;
// 非根节点或空集合只展示摘要信息
if (!isExpand(deep, expand)
|| arrays.length == 0) {
appendStringBuilder(buf, format("@%s[isEmpty=%s;size=%d]",
typeName,
arrays.length == 0,
arrays.length));
}
// 展开展示
else {
appendStringBuilder(buf, "[");
boolean append = false;
for (float e : arrays) {
for (int i = 0; i < deep + 1; i++) {
appendStringBuilder(buf, TAB);
}
renderObject(e, deep + 1, expand, buf);
appendStringBuilder(buf, ",");
append = true;
}
if (append) {
buf.deleteCharAt(buf.length() - 1);
}
for (int i = 0; i < deep; i++) {
appendStringBuilder(buf, TAB);
}
appendStringBuilder(buf, "]");
}
}
// double[]
else if (typeName.equals("double[]")) {
final double[] arrays = (double[]) obj;
// 非根节点或空集合只展示摘要信息
if (!isExpand(deep, expand)
|| arrays.length == 0) {
appendStringBuilder(buf, format("[isEmpty=%s;size=%d]",
arrays.length == 0,
arrays.length));
}
// 展开展示
else {
appendStringBuilder(buf, "[");
boolean append = false;
for (double e : arrays) {
for (int i = 0; i < deep + 1; i++) {
appendStringBuilder(buf, TAB);
}
renderObject(e, deep + 1, expand, buf);
appendStringBuilder(buf, ",");
append = true;
}
if (append) {
buf.deleteCharAt(buf.length() - 1);
}
for (int i = 0; i < deep; i++) {
appendStringBuilder(buf, TAB);
}
appendStringBuilder(buf, "]");
}
}
// boolean[]
else if (typeName.equals("boolean[]")) {
final boolean[] arrays = (boolean[]) obj;
// 非根节点或空集合只展示摘要信息
if (!isExpand(deep, expand)
|| arrays.length == 0) {
appendStringBuilder(buf, format("[isEmpty=%s;size=%d]",
arrays.length == 0,
arrays.length));
}
// 展开展示
else {
appendStringBuilder(buf, "[");
boolean append = false;
for (boolean e : arrays) {
for (int i = 0; i < deep + 1; i++) {
appendStringBuilder(buf, TAB);
}
renderObject(e, deep + 1, expand, buf);
appendStringBuilder(buf, ",");
append = true;
}
if (append) {
buf.deleteCharAt(buf.length() - 1);
}
for (int i = 0; i < deep; i++) {
appendStringBuilder(buf, TAB);
}
appendStringBuilder(buf, "]");
}
}
// char[]
else if (typeName.equals("char[]")) {
final char[] arrays = (char[]) obj;
// 非根节点或空集合只展示摘要信息
if (!isExpand(deep, expand)
|| arrays.length == 0) {
appendStringBuilder(buf, format("[isEmpty=%s;size=%d]",
arrays.length == 0,
arrays.length));
}
// 展开展示
else {
appendStringBuilder(buf, "[");
boolean append = false;
for (char e : arrays) {
for (int i = 0; i < deep + 1; i++) {
appendStringBuilder(buf, TAB);
}
renderObject(e, deep + 1, expand, buf);
appendStringBuilder(buf, ",");
append = true;
}
if (append) {
buf.deleteCharAt(buf.length() - 1);
}
for (int i = 0; i < deep; i++) {
appendStringBuilder(buf, TAB);
}
appendStringBuilder(buf, "]");
}
}
// byte[]
else if (typeName.equals("byte[]")) {
final byte[] arrays = (byte[]) obj;
// 非根节点或空集合只展示摘要信息
if (!isExpand(deep, expand)
|| arrays.length == 0) {
appendStringBuilder(buf, format("[isEmpty=%s;size=%d]",
arrays.length == 0,
arrays.length));
}
// 展开展示
else {
appendStringBuilder(buf, "[");
boolean append = false;
for (byte e : arrays) {
for (int i = 0; i < deep + 1; i++) {
appendStringBuilder(buf, TAB);
}
renderObject(e, deep + 1, expand, buf);
appendStringBuilder(buf, ",");
append = true;
}
if (append) {
buf.deleteCharAt(buf.length() - 1);
}
for (int i = 0; i < deep; i++) {
appendStringBuilder(buf, TAB);
}
appendStringBuilder(buf, "]");
}
}
// Object[]
else {
final Object[] arrays = (Object[]) obj;
// 非根节点或空集合只展示摘要信息
if (!isExpand(deep, expand)
|| arrays.length == 0) {
appendStringBuilder(buf, format("[isEmpty=%s;size=%d]",
arrays.length == 0,
arrays.length));
}
// 展开展示
else {
appendStringBuilder(buf, "[");
boolean append = false;
for (Object e : arrays) {
for (int i = 0; i < deep + 1; i++) {
appendStringBuilder(buf, TAB);
}
renderObject(e, deep + 1, expand, buf);
appendStringBuilder(buf, ",");
append = true;
}
if (append) {
buf.deleteCharAt(buf.length() - 1);
}
for (int i = 0; i < deep; i++) {
appendStringBuilder(buf, TAB);
}
appendStringBuilder(buf, "]");
}
}
}
// Throwable输出
else if (Throwable.class.isInstance(obj)) {
if (!isExpand(deep, expand)) {
appendStringBuilder(buf, format("[%s]", obj));
} else {
final Throwable throwable = (Throwable) obj;
final StringWriter sw = new StringWriter();
final PrintWriter pw = new PrintWriter(sw);
throwable.printStackTrace(pw);
appendStringBuilder(buf, sw.toString());
}
}
// Date输出
else if (Date.class.isInstance(obj)) {
appendStringBuilder(buf, format("[%s]", new SimpleDateFormat("yyyy-MM-dd HH:mm:ss,SSS").format(obj)));
} else if (obj instanceof Enum) {
appendStringBuilder(buf, format("[%s]", obj));
}
// 普通Object输出
else {
if (!isExpand(deep, expand)) {
appendStringBuilder(buf, format("[%s]", obj));
} else {
appendStringBuilder(buf, "[");
List fields = new ArrayList();
Class objClass = obj.getClass();
for (Field field : objClass.getDeclaredFields()) {
fields.add(field);
}
if (null != fields) {
boolean append = false;
for (Field field : fields) {
field.setAccessible(true);
try {
final Object value = field.get(obj);
for (int i = 0; i < deep + 1; i++) {
appendStringBuilder(buf, TAB);
}
appendStringBuilder(buf, field.getName());
appendStringBuilder(buf, "=");
renderObject(value, deep + 1, expand, buf);
appendStringBuilder(buf, ",");
append = true;
} catch (Throwable t) {
// ignore
}
}//for
if (append) {
buf.deleteCharAt(buf.length() - 1);
}
}//if
for (int i = 0; i < deep; i++) {
appendStringBuilder(buf, TAB);
}
appendStringBuilder(buf, "]");
}
}
}
}
/**
* append string to a string builder, with upper limit check
*
* @param buf the StringBuilder buffer
* @param data the data to be appended
* @throws ObjectTooLargeException if the size has exceeded the upper limit
*/
private static void appendStringBuilder(StringBuilder buf, String data) {
buf.append(data);
}
/**
* 是否展开当前深度的节点
*
* @param deep 当前节点的深度
* @param expand 展开极限
* @return true:当前节点需要展开 / false:当前节点不需要展开
*/
private static boolean isExpand(int deep, int expand) {
return deep < expand;
}
public static String serializeObject(Object request, int deep) {
StringBuilder buf = new StringBuilder();
renderObject(request, 0, deep, buf);
return buf.toString();
}
public static String serializeRequest(Object request, long maxRequestSize) {
return request == null ? null : toStr(request, maxRequestSize);
}
public static String serializeResponse(Object response, long maxResponseSize) {
return response == null ? null : toStr(response, maxResponseSize);
}
public static String toStr(Object request, long limitedSize) {
if (null == request) {
return "";
}
try {
if (Throwable.class.isAssignableFrom(request.getClass())) {
StringWriter stringWriter = new StringWriter();
((Throwable) request).printStackTrace(new PrintWriter(stringWriter));
String stack = stringWriter.toString();
if (stack.length() > limitedSize) {
stack = stack.substring(0, (int) limitedSize);
}
return stack;
}
ToStringStyle toStringStyle = new ToStringStyle.ShortPrefixToStringStyle().setLimitSize(limitedSize);
StringBuffer content = new StringBuffer();
toStringStyle.append(content, null, request, true);
if (content.length() < 1) {
return "";
}
return content.deleteCharAt(content.length() - 1).toString();
} catch (Throwable e) {
//ignore
}
return "";
}
private static class ObjectTooLargeException extends Exception {
public ObjectTooLargeException(String message) {
super(message);
}
}
}
