jqGrid与Struts2的结合应用（五） —— 结合Action类进行数据查询

这篇主要讲的是jqGrid的查找功能。

根据官方文档的介绍，jqGrid的查找功能分四种：

工具条查询；
自定义查询；
单条件表单查询；
高级表单查询（复杂条件查询）；

我个人认为这样划分比较复杂，可以基本分为两大类，即：

表单查询：包括单条件查询和高级查询（复杂条件查询）；

工具条查询：包括工具条查询和自定义查询；

而这两大类中，也以表单查询更常用。

现在逐个说明一下（我改变了官方文档的讲解顺序，我觉得自己的这个顺序，更直观，更靠近现实使用）。

1. 单条件表单查询

先从服务器端看起，为了配合jqGrid的查询功能，我们需要在JqGridBaseAction类中添加几个成员变量。成员变量的名字必须和jqGrid的prmNames选项中定义的参数名相对应上（具体参考本系列文章的第一篇）。

改进后的JqGridBaseAction类代码：

[java]
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package cn.gengv.struts2ex.jqGrid;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import com.byzl.hare.dao.impl.Criterion;
import com.byzl.hare.dao.impl.Criterion.CompareType;
import com.opensymphony.xwork2.ActionSupport;

@SuppressWarnings("serial")
public abstract class JqGridBaseAction<T> extends ActionSupport {
private List<T> gridModel = Collections.emptyList();
private Integer rows = 0;
private Integer page = 0;
private Integer total = 0;
private Integer record = 0;
private String sord;
private String sidx;

// (1)添加和查询有关的成员变量search、searchField、searchString、searchOper

private boolean search;
private String searchField;
private String searchString;
private String searchOper;

public abstract int getResultSize();
public abstract List<T> listResults(int from, int length);

// (2)添加用于根据条件进行查询的方法
public abstract int getResultSize(List<Criterion> criteria);
public abstract List<T> listResults(List<Criterion> criteria, int from, int length);

public String refreshGridModel() {
try {
List<Criterion> criteria = Collections.emptyList();

// (3)如果search值为true，则表明是查询请求

if(search == true) {

// (4)通过searchField、searchString、searchOper生成通用的查询条件

Criterion criterion = this.generateSearchCriterion(searchField, searchString, searchOper);

criteria = new ArrayList<Criterion>();

if(criterion != null) {
criteria.add(criterion);
}
}

int from = rows * (page - 1);
int length = rows;

List<T> results = Collections.emptyList();

if(!criteria.isEmpty()) { // (5)如果criteria列表不为空，则根据条件进行查询

record = this.getResultSize(criteria);
results = this.listResults(criteria, from, length);

} else {
record = this.getResultSize();
results = this.listResults(from, length);

}

this.setGridModel(results);
total = (int) Math.ceil((double) record / (double) rows);
return SUCCESS;
} catch (Exception e) {
e.printStackTrace();
this.addActionError(e.getMessage());
return ERROR;
}
}

// (6)通过searchField、searchString、searchOper三个参数生成Criterion的方法

public Criterion generateSearchCriterion(String searchField,
String searchString, String searchOper) {
Criterion criterion = null;

// (7)如果searchField、searchString、searchOper均不为null，且searchString不为空字符串时，则创建Criterion

if (searchField != null && searchString != null
& searchString.length() > 0 && searchOper != null) {
if ("eq".equals(searchOper)) {
criterion = Criterion.getEqualCriterion(searchField,
searchString, null);
} else if ("ne".equals(searchOper)) {
criterion = Criterion.getCompareCriterion(CompareType.NE,
searchField, searchString, null);
} else if ("lt".equals(searchOper)) {
criterion = Criterion.getCompareCriterion(CompareType.LT,
searchField, searchString, null);
} else if ("le".equals(searchOper)) {
criterion = Criterion.getCompareCriterion(CompareType.LTE,
searchField, searchString, null);
} else if ("gt".equals(searchOper)) {
criterion = Criterion.getCompareCriterion(CompareType.GT,
searchField, searchString, null);
} else if ("ge".equals(searchOper)) {
criterion = Criterion.getCompareCriterion(CompareType.GTE,
searchField, searchString, null);
} else if ("bw".equals(searchOper)) {
criterion = Criterion.getLikeCriterion(searchField,
searchString + "%", null);
} else if ("bn".equals(searchOper)) {
criterion = Criterion.getNotLikeCriterion(searchField,
searchString + "%", null);
} else if ("ew".equals(searchOper)) {
criterion = Criterion.getLikeCriterion(searchField, "%"
+ searchString, null);
} else if ("en".equals(searchOper)) {
criterion = Criterion.getNotLikeCriterion(searchField, "%"
+ searchString, null);
} else if ("cn".equals(searchOper)) {
criterion = Criterion.getLikeCriterion(searchField, "%"
+ searchString + "%", null);
} else if ("nc".equals(searchOper)) {
criterion = Criterion.getNotLikeCriterion(searchField, "%"
+ searchString + "%", null);
}
}
return criterion;
}

// getter和setter
...
}

[java]
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package com.byzl.hare.dao.impl;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class Criterion {
public static enum CriterionType {
EQUAL, LIKE, COMPARE, NOT_LIKE
}
public static enum CompareType {
GT, GTE, LT, LTE, EQ, NE
}
private CriterionType criterionType;
private String tableName;
private String field;
private Object value;
// 将Criteria转换为SQL条件语句
public static String convertToSql(List<Criterion> criteria) {
String criteriaString = "";
StringBuilder sb = new StringBuilder();
for (Criterion criterion : criteria) {
String prefix = criterion.getFieldPrefix();
switch (criterion.getCriterionType()) {
case EQUAL:
sb.append(prefix + criterion.getField() + "=? and ");
break;
case LIKE:
sb.append(prefix + criterion.getField() + " like ? and ");
break;

case NOT_LIKE:
sb.append(prefix + criterion.getField() + " not like ? and ");
break;
case COMPARE:
CompareType compareType = ((CompareCriterion) criterion)
.getCompareType();
switch (compareType) {
case EQ:
sb.append(prefix + criterion.getField() + "=? and ");
break;
case NE:
sb.append(prefix + criterion.getField() + "<>? and ");
break;
case GT:
sb.append(prefix + criterion.getField() + ">? and ");
break;
case GTE:
sb.append(prefix + criterion.getField() + ">=? and ");
break;
case LT:
sb.append(prefix + criterion.getField() + "<? and ");
break;
case LTE:
sb.append(prefix + criterion.getField() + "<=? and ");
break;
}
break;
}
}
int i = -1;
if ((i = sb.lastIndexOf(" and ")) != -1) {
criteriaString = sb.substring(0, i);
}
return criteriaString;
}
// 将Criteria各条件的值转换为List<Object>

public static List<Object> getCriteriaValues(List<Criterion> criteria) {
List<Object> criteriaValues = criteria.isEmpty() ? Collections
.emptyList() : new ArrayList<Object>();
for (Criterion criterion : criteria) {
criteriaValues.add(criterion.getValue());
}
return criteriaValues;
}
public CriterionType getCriterionType() {
return criterionType;
}
public void setCriterionType(CriterionType criterionType) {
this.criterionType = criterionType;
}
public String getField() {
return field;
}
public void setField(String field) {
this.field = field;
}
public Object getValue() {
return value;
}
public void setValue(Object value) {
this.value = value;
}
public static Criterion getCompareCriterion(CompareType compareType,
String field, Object value, String tableName) {
CompareCriterion compareCriterion = new CompareCriterion();
compareCriterion.setCriterionType(CriterionType.COMPARE);
compareCriterion.setCompareType(compareType);
compareCriterion.setField(field);
compareCriterion.setValue(value);
compareCriterion.setTableName(tableName);
return compareCriterion;
}
public static Criterion getLikeCriterion(String field, Object value,
String tableName) {
LikeCriterion likeCriterion = new LikeCriterion();
likeCriterion.setCriterionType(CriterionType.LIKE);
likeCriterion.setField(field);
likeCriterion.setValue(value);
likeCriterion.setTableName(tableName);
return likeCriterion;
}

public static Criterion getNotLikeCriterion(String field, Object value,
String tableName) {
NotLikeCriterion notLikeCriterion = new NotLikeCriterion();
notLikeCriterion.setCriterionType(CriterionType.NOT_LIKE);
notLikeCriterion.setField(field);
notLikeCriterion.setValue(value);
notLikeCriterion.setTableName(tableName);
return notLikeCriterion;
}
public static Criterion getEqualCriterion(String field, Object value,
String tableName) {
EqualCriterion equalCriterion = new EqualCriterion();
equalCriterion.setCriterionType(CriterionType.EQUAL);
equalCriterion.setField(field);
equalCriterion.setValue(value);
equalCriterion.setTableName(tableName);
return equalCriterion;
}
public static class LikeCriterion extends Criterion {
}

public static class NotLikeCriterion extends Criterion {
}
public static class EqualCriterion extends Criterion {
}
public static class CompareCriterion extends Criterion {
private CompareType compareType;
public CompareType getCompareType() {
return compareType;
}
public void setCompareType(CompareType compareType) {
this.compareType = compareType;
}
}
public String getTableName() {
return tableName;
}
public void setTableName(String tableName) {
this.tableName = tableName;
}
public String getFieldPrefix() {
return (tableName == null || tableName.length() == 0) ? "" : tableName
+ ".";
}
}

package com.byzl.hare.dao.impl;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class Criterion {
public static enum CriterionType {
EQUAL, LIKE, COMPARE, NOT_LIKE
}
public static enum CompareType {
GT, GTE, LT, LTE, EQ, NE
}
private CriterionType criterionType;
private String tableName;
private String field;
private Object value;
// 将Criteria转换为SQL条件语句
public static String convertToSql(List<Criterion> criteria) {
String criteriaString = "";
StringBuilder sb = new StringBuilder();
for (Criterion criterion : criteria) {
String prefix = criterion.getFieldPrefix();
switch (criterion.getCriterionType()) {
case EQUAL:
sb.append(prefix + criterion.getField() + "=? and ");
break;
case LIKE:
sb.append(prefix + criterion.getField() + " like ? and ");
break;

case NOT_LIKE:
sb.append(prefix + criterion.getField() + " not like ? and ");
break;
case COMPARE:
CompareType compareType = ((CompareCriterion) criterion)
.getCompareType();
switch (compareType) {
case EQ:
sb.append(prefix + criterion.getField() + "=? and ");
break;
case NE:
sb.append(prefix + criterion.getField() + "<>? and ");
break;
case GT:
sb.append(prefix + criterion.getField() + ">? and ");
break;
case GTE:
sb.append(prefix + criterion.getField() + ">=? and ");
break;
case LT:
sb.append(prefix + criterion.getField() + "<? and ");
break;
case LTE:
sb.append(prefix + criterion.getField() + "<=? and ");
break;
}
break;
}
}
int i = -1;
if ((i = sb.lastIndexOf(" and ")) != -1) {
criteriaString = sb.substring(0, i);
}
return criteriaString;
}
// 将Criteria各条件的值转换为List<Object>
public static List<Object> getCriteriaValues(List<Criterion> criteria) {
List<Object> criteriaValues = criteria.isEmpty() ? Collections
.emptyList() : new ArrayList<Object>();
for (Criterion criterion : criteria) {
criteriaValues.add(criterion.getValue());
}
return criteriaValues;
}
public CriterionType getCriterionType() {
return criterionType;
}
public void setCriterionType(CriterionType criterionType) {
this.criterionType = criterionType;
}
public String getField() {
return field;
}
public void setField(String field) {
this.field = field;
}
public Object getValue() {
return value;
}
public void setValue(Object value) {
this.value = value;
}
public static Criterion getCompareCriterion(CompareType compareType,
String field, Object value, String tableName) {
CompareCriterion compareCriterion = new CompareCriterion();
compareCriterion.setCriterionType(CriterionType.COMPARE);
compareCriterion.setCompareType(compareType);
compareCriterion.setField(field);
compareCriterion.setValue(value);
compareCriterion.setTableName(tableName);
return compareCriterion;
}
public static Criterion getLikeCriterion(String field, Object value,
String tableName) {
LikeCriterion likeCriterion = new LikeCriterion();
likeCriterion.setCriterionType(CriterionType.LIKE);
likeCriterion.setField(field);
likeCriterion.setValue(value);
likeCriterion.setTableName(tableName);
return likeCriterion;
}

public static Criterion getNotLikeCriterion(String field, Object value,
String tableName) {
NotLikeCriterion notLikeCriterion = new NotLikeCriterion();
notLikeCriterion.setCriterionType(CriterionType.NOT_LIKE);
notLikeCriterion.setField(field);
notLikeCriterion.setValue(value);
notLikeCriterion.setTableName(tableName);
return notLikeCriterion;
}
public static Criterion getEqualCriterion(String field, Object value,
String tableName) {
EqualCriterion equalCriterion = new EqualCriterion();
equalCriterion.setCriterionType(CriterionType.EQUAL);
equalCriterion.setField(field);
equalCriterion.setValue(value);
equalCriterion.setTableName(tableName);
return equalCriterion;
}
public static class LikeCriterion extends Criterion {
}

public static class NotLikeCriterion extends Criterion {
}
public static class EqualCriterion extends Criterion {
}
public static class CompareCriterion extends Criterion {
private CompareType compareType;
public CompareType getCompareType() {
return compareType;
}
public void setCompareType(CompareType compareType) {
this.compareType = compareType;
}
}
public String getTableName() {
return tableName;
}
public void setTableName(String tableName) {
this.tableName = tableName;
}
public String getFieldPrefix() {
return (tableName == null || tableName.length() == 0) ? "" : tableName
+ ".";
}
}

简要说明一下：

我把Criterion分成4类：EqualCriterion、CompareCriterion、LikeCriterion、NotLikeCriterion。（具体划分方式全为使用方便）
另外还有两个静态方法：convertToSql和getCriteriaValues，用来将Criterion列表转化为JdbcTemplate需要的SQL子句和参数列表。

回到ListContactsAction，代码如下：

[java]
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package cn.gengv.struts2ex.jqGrid;

import java.util.Collections;
import java.util.List;
import com.byzl.hare.dao.impl.Criterion;
import com.byzl.hare.model.Contact;
import com.byzl.hare.service.ContactService;

@SuppressWarnings("serial")
public class ListContactsAction extends JqGridBaseAction<Contact> {

private ContactService contactService;

@Override
public String execute() {
return this.refreshGridModel();
}

@Override
public int getResultSize() {
return this.contactService.queryResultsCount(null);
}
@Override
public List<Contact> listResults(int from, int length) {
return this.contactService.queryByPage(null, from, length);
}

@Override
public int getResultSize(List<Criterion> criteria) {
return this.contactService.queryResultsCount(criteria);
}

@Override
public List<Contact> listResults(List<Criterion> criteria, int from, int length) {
List<Contact> results = Collections.emptyList();

results = this.contactService.queryByPage(criteria, from, length);

return results;
}

public void setContactService(ContactService contactService) {
this.contactService = contactService;
}
}

[javascript]
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var singleCriterionSearch = function() {
$("#gridTable").jqGrid("searchGrid", {
caption: "查找",
Find: "Go!",
closeAfterSearch: true
});
};

var singleCriterionSearch = function() {
$("#gridTable").jqGrid("searchGrid", {
caption: "查找",
Find: "Go!",
closeAfterSearch: true
});
};

等同于

[javascript]
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$("#gridTable").jqGrid("navGrid", "#gridPager", {},{},{},{},
{ // 与查询相关的prmSearch参数
caption: "查找",
Find: "Go!",
closeAfterSearch: true
},{});

[javascript]
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$("#gridTable").jqGrid("navGrid", "#gridPager", {},{},{},{},
{   // 与查询相关的prmSearch参数
caption: "查找",
Find: "Go!",
closeAfterSearch: true,
multipleSearch: true,
groupOps: [{ op: "AND", text: "全部" }]
},{});

$("#gridTable").jqGrid("navGrid", "#gridPager", {},{},{},{},
{	// 与查询相关的prmSearch参数
caption: "查找",
Find: "Go!",
closeAfterSearch: true,
multipleSearch: true,
groupOps: [{ op: "AND", text: "全部" }]
},{});

或者

[javascript]
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var complexCriteriaSearch = function() {
$("#gridTable").jqGrid("searchGrid", {
caption: "查找",
Find: "Go!",
closeAfterSearch: true,
multipleSearch: true,
groupOps: [{ op: "AND", text: "全部" }]
});
};

[javascript]
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nd： 1278688214496
page：   1
rows：   15
search： true
searchField：    id
searchOper： ge
searchString：   9000
sidx：
sord：   asc

nd：	1278688214496
page：	1
rows：	15
search：	true
searchField：	id
searchOper：	ge
searchString：	9000
sidx：
sord：	asc

而复杂条件的查询的参数是下面这种形式：
http://localhost:8085/Hare/jqGridTest/jqGrid05.action?search=true &nd=1278688110637&rows=15&page=1&sidx=&sord=asc&filters=%7B%22groupOp%22%3A%22AND%22%2C%22rules%22%3A%5B%7B%22field%22%3A%22id%22%2C%22op%22%3A%22le%22%2C%22data%22%3A%221500%22%7D%2C%7B%22field%22%3A%22lastName%22%2C%22op%22%3A%22bw%22%2C%22data%22%3A%22LN-3%22%7D%2C%7B%22field%22%3A%22email%22%2C%22op%22%3A%22cn%22%2C%22data%22%3A%22sy%22%7D%5D%7D

即：

[javascript]
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filters： {"groupOp":"AND","rules":[{"field":"id","op":"le","data":"1500"},{"field":"lastName","op":"bw","data":"LN-3"},{"field":"email","op":"cn","data":"sy"}]}
nd： 1278688110637
page： 1
rows： 15
search： true
sidx：
sord： asc

[java]
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public List<Criterion> generateSearchCriteriaFromFilters(String filters) {
List<Criterion> criteria = new ArrayList<Criterion>();

JSONObject jsonObject = JSONObject.fromObject(filters);

JSONArray rules = jsonObject.getJSONArray("rules");

for(Object obj : rules) {
JSONObject rule = (JSONObject) obj;

String field = rule.getString("field");
String op = rule.getString("op");
String data = rule.getString("data");

Criterion criterion = this.generateSearchCriterion(field, data, op);

if(criterion != null) {
criteria.add(criterion);
}
}

return criteria;
}

public List<Criterion> generateSearchCriteriaFromFilters(String filters) {
List<Criterion> criteria = new ArrayList<Criterion>();

JSONObject jsonObject = JSONObject.fromObject(filters);

JSONArray rules = jsonObject.getJSONArray("rules");

for(Object obj : rules) {
JSONObject rule = (JSONObject) obj;

String field = rule.getString("field");
String op = rule.getString("op");
String data = rule.getString("data");

Criterion criterion = this.generateSearchCriterion(field, data, op);

if(criterion != null) {
criteria.add(criterion);
}
}

return criteria;
}

其余部分的代码：

[java]
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package cn.gengv.struts2ex.jqGrid;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

import com.byzl.hare.dao.impl.Criterion;
import com.byzl.hare.dao.impl.Criterion.CompareType;
import com.opensymphony.xwork2.ActionSupport;

@SuppressWarnings("serial")
public abstract class JqGridBaseAction<T> extends ActionSupport {
private List<T> gridModel = Collections.emptyList();
private Integer rows = 0;
private Integer page = 0;
private Integer total = 0;
private Integer record = 0;
private String sord;
private String sidx;

private boolean search;
private String searchField;
private String searchString;
private String searchOper;

public abstract int getResultSize();
public abstract List<T> listResults(int from, int length);

// (1)添加filters成员变量

private String filters;

public abstract int getResultSize(List<Criterion> criteria);
public abstract List<T> listResults(List<Criterion> criteria, int from, int length);

public String refreshGridModel() {
try {
List<Criterion> criteria = Collections.emptyList();

if(search == true) {
criteria = new ArrayList<Criterion>();

// (2)将Filter转化为Criterion列表，并加入总的Criterion列表

if(filters != null && filters.length()>0) {
criteria.addAll(this.generateSearchCriteriaFromFilters(filters));
}

// (3)将searchField、searchString、searchOper转化为Criterion，并加入总的Criterion列表

Criterion criterion = this.generateSearchCriterion(searchField, searchString, searchOper);
if(criterion != null) {
criteria.add(criterion);
}
}

int from = rows * (page - 1);
int length = rows;

List<T> results = Collections.emptyList();

if(!criteria.isEmpty()) {
record = this.getResultSize(criteria);
results = this.listResults(criteria, from, length);

} else {
record = this.getResultSize();
results = this.listResults(from, length);

}

this.setGridModel(results);
total = (int) Math.ceil((double) record / (double) rows);
return SUCCESS;
} catch (Exception e) {
e.printStackTrace();
this.addActionError(e.getMessage());
return ERROR;
}
}

public Criterion generateSearchCriterion(String searchField,
String searchString, String searchOper) {
...

}

public List<Criterion> generateSearchCriteriaFromFilters(String filters) {
List<Criterion> criteria = new ArrayList<Criterion>();

JSONObject jsonObject = JSONObject.fromObject(filters);

JSONArray rules = jsonObject.getJSONArray("rules");

for(Object obj : rules) {
JSONObject rule = (JSONObject) obj;

String field = rule.getString("field");
String op = rule.getString("op");
String data = rule.getString("data");

Criterion criterion = this.generateSearchCriterion(field, data, op);

if(criterion != null) {
criteria.add(criterion);
}
}

return criteria;
}
//getter和setter
...
}

[javascript]
view plaincopyprint?

firstName：  FN-cjxxxds3
lastName：   LN-3iviu7o
nd： 1278692114137
page：   1
rows：   15
search： true
sidx：
sord：   asc
telNo：  TEL-gzbn1w

firstName：	FN-cjxxxds3
lastName：	LN-3iviu7o
nd：	1278692114137
page：	1
rows：	15
search：	true
sidx：
sord：	asc
telNo：	TEL-gzbn1w

而当stringResult设为true的情况下，查询参数会按照复杂条件查询的方式发送：

[javascript]
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filters： {"groupOp":"AND","rules":[{"field":"lastName","op":"bw","data":"LN-3iviu7o"},{"field":"firstName","op":"bw","data":"FN-cjxxxds3"},{"field":"telNo","op":"bw","data":"TEL-gzbn1w"}]}
nd： 1278692302168
page： 1
rows： 15
search： true
sidx：
sord： asc

filters： {"groupOp":"AND","rules":[{"field":"lastName","op":"bw","data":"LN-3iviu7o"},{"field":"firstName","op":"bw","data":"FN-cjxxxds3"},{"field":"telNo","op":"bw","data":"TEL-gzbn1w"}]}
nd： 1278692302168
page： 1
rows： 15
search： true
sidx：
sord： asc

工具条查询相关的附加方法：

triggerToolbar ：当调用此方法，search参数会变为true，并向Server提交ajax请求；
clearToolbar ：当调用此方法，清除输入值，并将search参数设为false，向Server提交ajax请求；
toggleToolbar ：打开/关闭查询工具条。

注意以上三种附加方法的调用方式为：

$("#gridTable")[0].triggerToolbar();

注：一定不能少了“[0]”。



4. 自定义查询

虽然官方文档里将这种查询方式成为自定义查询，但其实就是工具条查询的变种。无非是改变了查询工具条的位置以及构建方式。

首先需要在html页面中建立一个区域，用于存放输入查询条件的表单，例如：

<div id="mysearch"></div>

然后构建查询工具条：

$("#mysearch").filterGrid('#grid_id',options);

或者

$("#mysearch").jqGrid('filterGrid','#grid_id',options);

主要选项：

gridModel ：默认为false；如果设为true，则使用colModel中的name、index、edittype、editoptions、search等属性来构建查询（只有colModel的search属性为true的列会被用来构建查询表单）；如果此项被设为false，则应构建一个filterModel数组来处理查询。
gridNames ：默认为false；仅当gridModel为true的时候有效，当此项设为true时，会从jqGrid的colNames选项或得每列的标题。
filterModel ：当gridModel为false是应该使用该属性构建查询表单。（稍后介绍）
formtype ：定义查询表单应该是横向排列的还是纵向排列的。
autosearch ：设为true时，当输入框中回车或select选择框值改变时，触发查询；设为false时，通过按钮触发查询。默认为true。
formclass/tableclass/buttonclass
：应用于表单的样式。

其他选项，可在真正使用时，查询文档。

filterModel: [

…

{label:'LableFild', name: 'colname', stype: 'select', defval: 'default_value', surl: 'someurl', sopt:{optins for the select}},

…

]

注：由于传递查询参数的方式与工具条查询在stringResult不为true的情况下类似，即key:value对的格式，因此这种查询方式对于JqGridBaseAction类来说用处不大。

附加方法：

triggerSearch ：触发查询；
clearSearch ：清除查询表单中的值，并使用空表单或默认值从Server获得数据。

var sg = jQuery("#mysearch").filterGrid(...)[0];

sg.triggerSearch();

sg.clearSearch();

sg.triggerSearch();