json工具类
/**
* @Description JsonUtil.java
* @author 张军
* @date 2016-7-6 下午1:29:18
* @version V1.0
*/
package zj.json;
import java.io.Serializable;
import java.sql.Timestamp;
import java.util.Date;
import zj.date.bean.DateTime;
import zj.json.bean.DateFormatSerializer;
import zj.json.bean.ToJSONString;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.JSONSerializer;
import com.alibaba.fastjson.serializer.NameFilter;
import com.alibaba.fastjson.serializer.PropertyFilter;
import com.alibaba.fastjson.serializer.PropertyPreFilter;
import com.alibaba.fastjson.serializer.SerializeConfig;
import com.alibaba.fastjson.serializer.SerializeWriter;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.serializer.ValueFilter;
/**
* json工具类
*
* @author 张军
* @date 2016-7-6 下午1:29:18
* @version V1.0
* @author SHNKCS 张军 {@link <a target=_blank href="http://www.zhangjunbk.com">张军个人网站</a> <a target=_blank href="http://user.qzone.qq.com/360901061/">张军QQ空间</a>}
*/
public class JsonUtil implements Serializable {
private static final long serialVersionUID = 1L;
public static SerializeConfig MAPPING = new SerializeConfig();
static {
register();
}
/**
* 转换为json字符串
*
* @param value
* 转换对象值
* @author 张军
* @date 2015-11-03 21:59:00
* @modifiyNote
* @version 1.0
* @return
*/
public static String toJSONString(Object value) {
return toJSONString(value, null);
}
/**
* 转换为json字符串
*
* @param object
* 转换对象值
* @param toJson
* 参数对象
* @author 张军
* @date 2015-11-03 21:59:00
* @modifiyNote
* @version 1.0
* @return
*/
public static final String toJSONString(Object object, ToJSONString toJson) {
if (toJson == null) {
return JSON.toJSONString(object, MAPPING);
}
SerializeWriter out = new SerializeWriter();
try {
JSONSerializer serializer = null;
serializer = new JSONSerializer(out, MAPPING);
if (toJson.prettyFormat) {
toJson.features.add(SerializerFeature.PrettyFormat);
}
for (SerializerFeature feature : toJson.features) {
serializer.config(feature, true);
}
serializer.config(SerializerFeature.WriteDateUseDateFormat, true);
if (toJson.filter != null) {
if (toJson.filter instanceof PropertyPreFilter) {
serializer.getPropertyPreFilters().add((PropertyPreFilter) toJson.filter);
}
if (toJson.filter instanceof NameFilter) {
serializer.getNameFilters().add((NameFilter) toJson.filter);
}
if (toJson.filter instanceof ValueFilter) {
serializer.getValueFilters().add((ValueFilter) toJson.filter);
}
if (toJson.filter instanceof PropertyFilter) {
serializer.getPropertyFilters().add((PropertyFilter) toJson.filter);
}
}
serializer.write(object);
return out.toString();
} finally {
out.close();
}
}
/**
* 注册日期格式化
*
* @author 张军
* @date 2015-11-03 21:59:00
* @modifiyNote
* @version 1.0
* @return 批量集合值
*/
private static void register() {
MAPPING.put(Date.class, new DateFormatSerializer());
MAPPING.put(DateTime.class, new DateFormatSerializer());
MAPPING.put(Timestamp.class, new DateFormatSerializer());
}
}json工具类参数对象
/**
* @Description JsonUtil.java
* @author 张军
* @date 2016-7-6 下午1:29:18
* @version V1.0
*/
package zj.json.bean;
import java.io.Serializable;
import java.util.HashSet;
import java.util.Set;
import com.alibaba.fastjson.serializer.SerializeFilter;
import com.alibaba.fastjson.serializer.SerializerFeature;
/**
* json工具类参数对象
*
* @author 张军
* @date 2016-7-6 下午1:29:18
* @version V1.0
* @author SHNKCS 张军 {@link <a target=_blank href="http://www.shanghaijiadun.com">上海加盾信息科技有限公司</a> <a target=_blank href="http://www.zhangjunbk.com">张军个人网站</a> <a target=_blank href="http://user.qzone.qq.com/360901061/">张军QQ空间</a>}
*/
public class ToJSONString implements Serializable {
private static final long serialVersionUID = 1L;
/** 过虑属性 **/
public SerializeFilter filter;
/** 数组 **/
public Set<SerializerFeature> features = new HashSet<SerializerFeature>();
/** 是否格式化json串 **/
public boolean prettyFormat;
/**
* 构造方法默认参数
*/
public ToJSONString() {
// 在springMVC中必须移除pageModel.remove("org.springframework.validation.BindingResult.[user当前类]");
// FastJson提供了SerializerFeature.DisableCircularReferenceDetect
// 这个序列化选项，用来关闭引用检测。关闭引用检测后，重复引用对象时就不会被$ref代替，但是在循环引用时也会导致StackOverflowError异常。
this.features.add(SerializerFeature.DisableCircularReferenceDetect);
}
}json属性过虑器
package zj.json.bean;
import java.util.HashSet;
import java.util.Set;
import zj.check.util.CheckUtil;
import com.alibaba.fastjson.serializer.JSONSerializer;
import com.alibaba.fastjson.serializer.PropertyPreFilter;
/**
* json属性过虑器
*
* @author 张军
* @date 2016-7-6 下午1:29:18
* @version V1.0
* @author SHNKCS 张军 {@link <a target=_blank href="http://www.zhangjunbk.com">张军个人网站</a> <a target=_blank href="http://user.qzone.qq.com/360901061/">张军QQ空间</a>}
*/
public class SimplePropertyPreFilter implements PropertyPreFilter {
private final Class<?> clazz;
// 包含的属性
private final Set<String> includes = new HashSet<String>();
// 排除的属性
private final Set<String> excludes = new HashSet<String>();
public SimplePropertyPreFilter(String... properties) {
this(null, properties);
}
public SimplePropertyPreFilter(Class<?> clazz, String... properties) {
super();
this.clazz = clazz;
for (String item : properties) {
if (CheckUtil.isNotNull(item)) {
this.includes.add(item);
}
}
}
public Class<?> getClazz() {
return clazz;
}
public Set<String> getIncludes() {
return includes;
}
public Set<String> getExcludes() {
return excludes;
}
/**
* 是否应用json字段
*
* @param serializer
* @see com.alibaba.fastjson.serializer.JSONSerializer
* @param source
* 被序列化的对象
* @param name
* 被序列化的对象中的属性
* @author 张军
* @date 2015-11-03 21:59:00
* @modifiyNote
* @version 1.0
* @return true:包含属性 false:不包含属性
*/
public boolean apply(JSONSerializer serializer, Object source, String name) {
if (source == null) {
return true;
}
if (clazz != null && !clazz.isInstance(source)) {
return true;
}
if (this.excludes.contains(name)) {
return false;
}
if (includes.size() == 0 || includes.contains(name)) {
return true;
}
return false;
}
}json日期格式化类
/**
* @Description DateFormatSerializer.java
* @author 张军
* @date 2016-7-6 下午4:37:19
* @version V1.0
*/
package zj.json.bean;
import java.io.IOException;
import java.lang.reflect.Type;
import java.sql.Timestamp;
import zj.check.util.CheckUtil;
import zj.date.bean.DateTime;
import zj.date.util.DateUtil;
import com.alibaba.fastjson.serializer.JSONSerializer;
import com.alibaba.fastjson.serializer.ObjectSerializer;
/**
* json日期格式化类
*
* @author 张军
* @date 2016-7-6 下午1:29:18
* @version V1.0
* @author SHNKCS 张军 {@link <a target=_blank href="http://www.shanghaijiadun.com">上海加盾信息科技有限公司</a> <a target=_blank href="http://www.zhangjunbk.com">张军个人网站</a> <a target=_blank href="http://user.qzone.qq.com/360901061/">张军QQ空间</a>}
*/
public class DateFormatSerializer implements ObjectSerializer {
private String pattern;
public DateFormatSerializer() {
}
public DateFormatSerializer(String pattern) {
this.pattern = pattern;
}
/**
* 重写write方法
*/
@Override
public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType, int features) throws IOException {
if (object == null) {
serializer.getWriter().writeNull();
return;
}
String text = "";
if (CheckUtil.isNull(pattern)) {
// 自动判断
if (object instanceof DateTime || object instanceof Timestamp) {
text = DateUtil.dateParse(object, "yyyy-MM-dd HH:mm:ss");
} else if (object instanceof java.util.Date) {
//java.sql.Date继承自java.util.Date
text = DateUtil.dateParse(object, "yyyy-MM-dd");
} else {
// 默认情况下
text = DateUtil.dateParse(object, "yyyy-MM-dd HH:mm:ss");
}
} else {
text = DateUtil.dateParse(object, pattern);
}
serializer.write(text);
}
}
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