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ContextValueFilter
wenshao edited this page Apr 18, 2016
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6 revisions
在某些场景下,对Value做过滤,需要获得所属JavaBean的信息,包括类型、字段、方法等。在fastjson-1.2.9中,提供了ContextValueFilter,类似于之前版本提供的ValueFilter,只是多了SeriliazeContext参数可用。
package com.alibaba.fastjson.serializer;
public interface ContextValueFilter extends SerializeFilter {
Object process(SerializeContext context,
Object object,
String name,
Object value);
}
其中SerializeContext的定义如下:
package com.alibaba.fastjson.serializer;
public final class SerializeContext {
public Class<?> getBeanClass();
public Method getMethod();
public Field getField();
public String getName();
public String getLabel();
}
ContextValueFilter valueFilter = new ContextValueFilter() {
public Object process(SerializeContext context,
Object object,
String name,
Object value) {
Class<?> objectClass = context.getBeanClass();
UrlIdentify annotation = context.getAnnation(UrlIdentify.class);
// ....
return value;
}
};
JSON.toJSONString(model, valueFilter);
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