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cn.ennwifi.webframe.ui.client.tools.Jsons Maven / Gradle / Ivy
package cn.ennwifi.webframe.ui.client.tools;
import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.json.client.JSONArray;
import com.google.gwt.json.client.JSONBoolean;
import com.google.gwt.json.client.JSONNull;
import com.google.gwt.json.client.JSONNumber;
import com.google.gwt.json.client.JSONObject;
import com.google.gwt.json.client.JSONString;
import com.google.gwt.json.client.JSONValue;
/**
* The type Jsons.
*
* @author zhangjianshe @navinfo.com
*/
public class Jsons {
/**
* 获取对象中的值
*
* @param json JSON对象 obj
* @param path JSON对象图 name.surname
* @param dv 缺省值
* @return as int
*/
public final static Integer getAsInt(JSONObject json, String path, Integer dv) {
JSONObject obj = json;
JSONNumber value = null;
if (path != null && path.length() > 0) {
String[] paths = path.split("\\.");
for (int i = 0; i < paths.length; i++) {
String p = paths[i];
if (obj == null)
return dv;
JSONValue v = obj.get(p);
if (v == null) {
return dv;
}
if (i < paths.length - 1) {
obj = v.isObject();
} else {
value = v.isNumber();
}
}
}
if (value != null) {
return (int) value.doubleValue();
} else {
return dv;
}
}
/**
* 获取对象中的值
*
* @param json JSON对象 obj
* @param path JSON对象图 name.surname
* @param dv 缺省值
* @return as string
*/
public final static String getAsString(JSONObject json, String path, String dv) {
JSONObject obj = json;
JSONValue value = null;
if (path != null && path.length() > 0) {
String[] paths = path.split("\\.");
for (int i = 0; i < paths.length; i++) {
String p = paths[i];
if (obj == null)
return dv;
JSONValue v = obj.get(p);
if (v == null) {
return dv;
}
if (i < paths.length - 1) {
obj = v.isObject();
} else {
value = v;
}
}
}
if (value != null) {
return toObjString(value, dv);
} else {
return dv;
}
}
private static String toObjString(JSONValue v, String dv) {
if (v == null) {
return dv;
}
JSONNull n = v.isNull();
if (n != null) {
return "";
}
JSONString str = v.isString();
if (str != null) {
return str.stringValue();
}
JSONBoolean b = v.isBoolean();
if (b != null) {
return b.toString();
}
JSONNumber num = v.isNumber();
if (num != null) {
return num.toString();
}
JSONObject obj = v.isObject();
if (obj != null) {
return obj.toString();
}
return "";
}
/**
* Gets as array.
*
* @param json the json
* @param path the path
* @param dv the dv
* @return as array
*/
public static JSONArray getAsArray(JSONObject json, String path, JSONArray dv) {
JSONObject obj = json;
JSONArray value = null;
if (path != null && path.length() > 0) {
String[] paths = path.split("\\.");
for (int i = 0; i < paths.length; i++) {
String p = paths[i];
if (obj == null)
return dv;
JSONValue v = obj.get(p);
if (v == null) {
return dv;
}
if (i < paths.length - 1) {
obj = v.isObject();
} else {
value = v.isArray();
}
}
}
if (value != null) {
return value.isArray();
} else {
return dv;
}
}
/**
* Gets as boolean.
*
* @param json the json
* @param path the path
* @param dv the dv
* @return as boolean
*/
public static boolean getAsBoolean(JSONObject json, String path, boolean dv) {
JSONObject obj = json;
JSONBoolean value = null;
if (path != null && path.length() > 0) {
String[] paths = path.split("\\.");
for (int i = 0; i < paths.length; i++) {
String p = paths[i];
if (obj == null)
return dv;
JSONValue v = obj.get(p);
if (v == null) {
return dv;
}
if (i < paths.length - 1) {
obj = v.isObject();
} else {
value = v.isBoolean();
}
}
}
if (value != null) {
return value.booleanValue();
} else {
return dv;
}
}
/**
* Gets as double.
*
* @param json the json
* @param path the path
* @param dv the dv
* @return as double
*/
public static Double getAsDouble(JSONObject json, String path, double dv) {
JSONObject obj = json;
JSONNumber value = null;
if (path != null && path.length() > 0) {
String[] paths = path.split("\\.");
for (int i = 0; i < paths.length; i++) {
String p = paths[i];
if (obj == null)
return dv;
JSONValue v = obj.get(p);
if (v == null) {
return dv;
}
if (i < paths.length - 1) {
obj = v.isObject();
} else {
value = v.isNumber();
}
}
}
if (value != null) {
return value.doubleValue();
} else {
return dv;
}
}
/**
* Gets as object.
*
* @param json the json
* @param path the path
* @param dv the dv
* @return as object
*/
public static JSONObject getAsObject(JSONObject json, String path, JSONObject dv) {
JSONObject obj = json;
if (path != null && path.length() > 0) {
String[] paths = path.split("\\.");
for (int i = 0; i < paths.length; i++) {
String p = paths[i];
if (obj == null)
return dv;
JSONValue v = obj.get(p);
if (v == null) {
return dv;
}
if (i < paths.length - 1) {
obj = v.isObject();
}
}
}
JSONObject n = obj.isObject();
if (n != null) {
return n;
} else {
return dv;
}
}
/**
* Gets as value.
*
* @param json the json
* @param path the path
* @param dv the dv
* @return as value
*/
public static JSONValue getAsValue(JSONObject json, String path, JSONValue dv) {
JSONObject obj = json;
JSONValue value = null;
if (path != null && path.length() > 0) {
String[] paths = path.split("\\.");
for (int i = 0; i < paths.length; i++) {
String p = paths[i];
if (obj == null)
return dv;
JSONValue v = obj.get(p);
if (v == null) {
return dv;
}
if (i < paths.length - 1) {
obj = v.isObject();
} else {
value = v;
}
}
}
if (value != null) {
return value;
} else {
return dv;
}
}
/**
* Log.
*
* @param log the log
*/
public native static void log(String log)/*-{
console.log(log);
}-*/;
/**
* Log.
*
* @param log the log
*/
public native static void log(JavaScriptObject log)/*-{
console.log(log);
}-*/;
/**
* To json string.
*
* @param o the o
* @param ifields 包含的字段
* @param efields 排除的字段
* @return string
*/
public final static native String toJson(JavaScriptObject o, String ifields, String efields)/*-{
var quoteString = function(str) {
if (str.match(escape)) {
return '"'
+ str.replace(escape, function(a) {
var c = meta[a];
if (typeof c === 'string') {
return c;
}
c = a.charCodeAt();
return '\\u00' + Math.floor(c / 16).toString(16)
+ (c % 16).toString(16);
}) + '"';
}
return '"' + str + '"';
};
var escape = /["\\\x00-\x1f\x7f-\x9f]/g, meta = {
'\b' : '\\b',
'\t' : '\\t',
'\n' : '\\n',
'\f' : '\\f',
'\r' : '\\r',
'"' : '\\"',
'\\' : '\\\\'
}, hasOwn = Object.prototype.hasOwnProperty;
var toJSON = function(o) {
if (o === null) {
return 'null';
}
var pairs, k, name, val, type = typeof o;
if (type === 'undefined') {
return undefined;
}
if (type === 'number' || type === 'boolean') {
return String(o);
}
if (type === 'string') {
return quoteString(o);
}
if (type === 'date') {
var month = o.getUTCMonth() + 1, day = o.getUTCDate(), year = o
.getUTCFullYear(), hours = o.getUTCHours(), minutes = o
.getUTCMinutes(), seconds = o.getUTCSeconds(), milli = o
.getUTCMilliseconds();
if (month < 10) {
month = '0' + month;
}
if (day < 10) {
day = '0' + day;
}
if (hours < 10) {
hours = '0' + hours;
}
if (minutes < 10) {
minutes = '0' + minutes;
}
if (seconds < 10) {
seconds = '0' + seconds;
}
if (milli < 100) {
milli = '0' + milli;
}
if (milli < 10) {
milli = '0' + milli;
}
return '"' + year + '-' + month + '-' + day + 'T' + hours + ':'
+ minutes + ':' + seconds + '.' + milli + 'Z"';
}
pairs = [];
if (typeof o === "array") {
for (k = 0; k < o.length; k++) {
pairs.push(toJSON(o[k]) || 'null');
}
return '[' + pairs.join(',') + ']';
}
if (typeof o === 'object') {
var ireg = null;
var ereg = null;
if (efields != null && efields.length > 0) {
ereg = eval("/" + efields + "/g");
}
if (ifields != null && ifields.length > 0) {
ireg = eval("/" + ifields + "/g");
}
for (k in o) {
if (hasOwn.call(o, k)) {
type = typeof k;
var ok = k;
if (type === 'number') {
name = '"' + k + '"';
} else if (type === 'string') {
name = quoteString(k);
} else {
continue;
}
type = typeof o[k];
if (ereg != null) {
if (ereg.test(ok)) {
continue;
}
}
if (ireg != null) {
if (!ireg.test(ok)) {
continue;
}
}
if (type !== 'function' && type !== 'undefined') {
val = toJSON(o[k]);
pairs.push(name + ':' + val);
}
}
}
return '{' + pairs.join(',') + '}';
}
};
return toJSON(o);
}-*/;
}
