json反序列化为java对象：
package com.taotao.common.bean;
import java.util.List;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
public class EasyUIResult {
// 定义jackson对象
private static final ObjectMapper MAPPER = new ObjectMapper();
private Integer total;
private List<?> rows;
public EasyUIResult() {
}
public EasyUIResult(Integer total, List<?> rows) {
this.total = total;
this.rows = rows;
}
public EasyUIResult(Long total, List<?> rows) {
this.total = total.intValue();
this.rows = rows;
}
public Integer getTotal() {
return total;
}
public void setTotal(Integer total) {
this.total = total;
}
public List<?> getRows() {
return rows;
}
public void setRows(List<?> rows) {
this.rows = rows;
}
/**
* Object是集合转化
*
* @param jsonData json数据
* @param clazz 集合中的类型
* @return
*/
public static EasyUIResult formatToList(String jsonData, Class<?> clazz) {
try {
JsonNode jsonNode = MAPPER.readTree(jsonData);
JsonNode data = jsonNode.get("rows");
List<?> list = null;
if (data.isArray() && data.size() > 0) {
list = MAPPER.readValue(data.traverse(),
MAPPER.getTypeFactory().constructCollectionType(List.class, clazz));
}
return new EasyUIResult(jsonNode.get("total").intValue(), list);
} catch (Exception e) {
return null;
}
}
}java对象序列化为json:
1.在项目中添加jackson依赖
<!-- JacksonJson处理工具包 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.4.2</version>
</dependency>2.定义Jackson对象
private static final ObjectMapper MAPPER = new ObjectMapper();3.调用Jackson对象的序化方法
MAPPER.writeValueAsString(java对象);
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