{“$ref”:"$.rows[0].style"} 解除引用;ssh一对多，多对多维护一端关系，防止多表关联查询出现死循环？分页查寻

@Controller("signAction")

@Scope("prototype")

public class SignAction implements ModelDriven<Sign> {

private Sign sign;

@Resource(name = "signService")

private SignService signService;

private String rows;// 每页显示的记录数

private String page;// 当前第几

@Override

public Sign getModel() {

if (sign != null) {

sign = new Sign();

}

return sign;

}

/**

* 作者：

* 功能：跳转页面

*/

public String showSigns() {

return "showSign";

}

/**

* 作者：

* 功能：页面加载json数据

* 

* @throws IOException

*/

@SuppressWarnings("unchecked")

public void signJson() throws IOException {

List<Sign> signList = signService.showAllSignsByPage(page, rows);

//这是防止死循环必须的

for (Sign sign : signList) {

sign.getDesk().setSigns(null);

sign.getStyle().setSigns(null);

}

long count = signService.getCount();

Map<String,Object> map = new HashMap<String,Object>();

map.put("rows", signList);

map.put("total", count);

// {"$ref":"$.rows[0].style"} 解除循环引用 ：SerializerFeature.DisableCircularReferenceDetect;

String json = JSON.toJSONString(map,SerializerFeature.DisableCircularReferenceDetect);

System.out.println(map);

ServletActionContext.getResponse().getWriter().write(json);

}

public String getRows() {

return rows;

}

public void setRows(String rows) {

this.rows = rows;

}

public String getPage() {

return page;

}

public void setPage(String page) {

this.page = page;

}

}