package com.paincker.utils;
import java.io.*;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.util.*;
/**
* Created by jzj on 2017/11/22.
*/
public class StringUtils {
private static final HashSet<Object> basicSet = new HashSet<>();
static {
basicSet.add(Boolean.class);
basicSet.add(Byte.class);
basicSet.add(Character.class);
basicSet.add(Short.class);
basicSet.add(Integer.class);
basicSet.add(Long.class);
basicSet.add(Float.class);
basicSet.add(Double.class);
basicSet.add(String.class);
basicSet.add(Object.class);
}
/**
* 通过反射将对象格式化成字符串，主要用于Log输出
*/
public static String objectDeepToString(Object o) {
TabStringBuilder builder = new TabStringBuilder();
objectDeepToString(builder, o);
return builder.toString();
}
private static void objectDeepToString(TabStringBuilder builder, Object o) {
if (o == null) {
builder.append("null");
return;
}
if (builder.getTabCount() > 15) { // max depth
builder.append(o);
return;
}
final Class<?> clazz = o.getClass();
if (o instanceof String) {
builder.append('"').append(o).append('"');
return;
}
if (clazz.isPrimitive() || basicSet.contains(clazz)) {
builder.append(o);
return;
}
if (clazz.isArray()) {
builder.append('[');
int length = Array.getLength(o);
if (length > 0) {
builder.incTab();
for (int i = 0; i < length; i++) {
if (i > 0) {
builder.append(',');
}
builder.newLine();
objectDeepToString(builder, Array.get(o, i));
}
builder.decTab();
builder.newLine();
}
builder.append(']');
return;
}
if (o instanceof Collection) {
builder.append('[');
Collection collection = (Collection) o;
if (!collection.isEmpty()) {
builder.incTab();
boolean first = true;
for (Object item : collection) {
if (first) {
first = false;
} else {
builder.append(',');
}
builder.newLine();
objectDeepToString(builder, item);
}
builder.decTab();
builder.newLine();
}
builder.append(']');
return;
}
if (o instanceof Map) {
builder.append('{');
Map map = (Map) o;
if (!((Map) o).isEmpty()) {
builder.incTab();
boolean first = true;
//noinspection unchecked
for (Map.Entry entry : (Set<Map.Entry>) map.entrySet()) {
if (first) {
first = false;
} else {
builder.append(',');
}
builder.newLine().append(entry.getKey()).append(": ");
objectDeepToString(builder, entry.getValue());
}
builder.decTab();
builder.newLine();
}
builder.append('}');
return;
}
builder.append('{');
ArrayList<Field> fields = getAllFields(clazz, true);
if (!fields.isEmpty()) {
builder.incTab();
boolean first = true;
for (Field field : fields) {
if (first) {
first = false;
} else {
builder.append(',');
}
try {
field.setAccessible(true);
Object value = field.get(o);
builder.newLine().append(field.getName()).append(": ");
objectDeepToString(builder, value);
} catch (IllegalAccessException e) {
L.e(e);
}
}
builder.decTab();
builder.newLine();
}
builder.append('}');
}
/**
* 获取Class的所有Field，包括继承的
*
* @param clazz Class
* @param superClassFirst 继承自父类的Field放前面
*/
public static ArrayList<Field> getAllFields(Class clazz, boolean superClassFirst) {
ArrayList<Field> list = new ArrayList<>();
while (clazz != null && clazz != Object.class) {
Field[] fields = clazz.getDeclaredFields();
if (fields != null && fields.length > 0) {
if (superClassFirst) {
list.addAll(0, Arrays.asList(fields));
} else {
Collections.addAll(list, fields);
}
}
clazz = clazz.getSuperclass();
}
return list;
}
public static String readAsString(File file) {
try {
return readAsString(new FileInputStream(file), "utf-8");
} catch (FileNotFoundException e) {
return null;
}
}
public static String readAsString(InputStream stream) {
return readAsString(stream, "utf-8");
}
public static String readAsString(InputStream is, String encode) {
if (is == null) {
return null;
}
BufferedReader reader = null;
try {
reader = new BufferedReader(new InputStreamReader(is, encode));
StringBuilder sb = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
sb.append(line).append("\n");
}
return sb.toString();
} catch (IOException e) {
L.e(e);
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
L.e(e);
}
}
}
return null;
}
/**
* 换行时带有缩进的StringBuilder
*/
public static class TabStringBuilder {
private final StringBuilder mBuilder = new StringBuilder();
private final Tab mTab = new Tab();
/**
* 获取当前缩进数量，初始值为0，可能为负数
*/
public int getTabCount() {
return mTab.getCount();
}
/**
* 增加缩进
*/
public TabStringBuilder incTab() {
mTab.inc();
return this;
}
/**
* 减少缩进
*/
public TabStringBuilder decTab() {
mTab.dec();
return this;
}
public TabStringBuilder append(char c) {
if (c == '\n' && mTab.notEmpty()) {
mBuilder.append(c).append(mTab.get());
} else {
mBuilder.append(c);
}
return this;
}
public TabStringBuilder append(CharSequence csq) {
mBuilder.append(replaceTab(csq));
return this;
}
public TabStringBuilder append(Object o) {
mBuilder.append(replaceTab(String.valueOf(o)));
return this;
}
public TabStringBuilder newLine() {
return append('\n');
}
private CharSequence replaceTab(CharSequence csq) {
if (csq != null && mTab.notEmpty()) {
return csq.toString().replace("\n", "\n" + mTab.get());
} else {
return csq;
}
}
@Override
public String toString() {
Gson TypeAdapter使用技巧几例：数据免判空、解析后校验、预处理.zip （19个子文件） 
GsonStudy-master 
gradle.properties 730B gradle wrapper 
gradle-wrapper.jar 52KB gradle-wrapper.properties 230B src test java com paincker testcase utils TestDeepToString.java 2KB gson TestNonNullField.java 2KB TestDeserializeAction.java 3KB main java com paincker utils data gson NonNullFieldFactory.java 7KB DeserializeActionFactory.java 3KB GsonUtils.java 959B IAfterDeserializeAction.java 328B IDataValidateAction.java 390B NonNullFieldConstructor.java 2KB NonNullField.java 605B ItemNonNullList.java 4KB L.java 863B StringUtils.java 9KB gradlew.bat 2KB build.gradle 152B gradlew 5KB资源评论
