使用Struts2框架实现MIniUI框架
MIniUi框架地址：http://www.miniui.com
1.增删改功能：
增删查功能都是通过JSP ajax传值
function saveData() {
var data = grid.getChanges();
var json = mini.encode(data);
grid.loading("保存中，请稍后......");
$.ajax({
url: "${pageContext.request.contextPath}/test/myCurd_save", //Action路径 需要跳转到的后台
data: { data: json },
type: "post",
success: function (text) {
grid.reload();
},
error: function (jqXHR, textStatus, errorThrown) {
alert(jqXHR.responseText);
}
});
}
后台Actionpublic class CRUDAction {
private String data;
//使用成员变量提供SET GET方法 获取到前台的参数
public String save() throws Exception{
System.out.println("data:"+data);
ArrayList rows = (ArrayList)JSON.Decode(data); //通过MiniUiDemo中的自带的JSON类把前台传入的参数转换成数组
for(int i=0;i<rows.size();i++){
HashMap<String,Object> map = (HashMap)rows.get(i); //获取到list 用Map数组切割
String state = (String)map.get("_state"); //state是获取到操作的类型
System.out.println("用户操作："+state);
if(state.equals("added")){ //添加
new TestDB().InsertEmployee(map);
}else if(state.equals("removed")){ //删除
int userid = Integer.parseInt(map.get("user_id").toString()); //获取到ID确定删除哪个用户
System.out.println("用户ID："+userid);
new TestDB().DeleteEmployee(userid);
}else if(state.equals("modified")){ //修改
new TestDB().UpdateDepartment(map);
}
}
return "ok";
}
public String getData() {
return data;
}
public void setData(String data) {
this.data = data;
}
}
TestDB 操作数据库
public class TestDB {
//mysql 配置链接数据库的4大属性
public static String driver = "com.mysql.jdbc.Driver";
public static String url = "jdbc:mysql://127.0.0.1/crud?useUnicode=true&characterEncoding=GBK";
public static String user = "root";
public static String pwd = "123456";
//添加用户
public String InsertEmployee(HashMap user) throws Exception
{
String id = (user.get("id") == null || user.get("id").toString().equals(""))? UUID.randomUUID().toString() : user.get("id").toString();
user.put("id", id);
if (user.get("name") == null) user.put("name", "");
if (StringUtil.isNullOrEmpty(user.get("gender"))) user.put("gender", 0);
Connection conn = getConn();
String sql = "insert into user(user_name, pass_word, gender)"
+ " values(?, ?, ?)";
PreparedStatement stmt = conn.prepareStatement(sql);
stmt.setString(1, ToString(user.get("user_name")));
stmt.setString(2, ToString(user.get("pass_word")));
stmt.setString(3, ToString(user.get("gender")));
stmt.executeUpdate();
stmt.close();
conn.close();
return id;
}
//删除用户
public void DeleteEmployee(int userId) throws Exception
{
Connection conn = getConn();
Statement stmt = conn.createStatement();
String sql = "delete from user where user_id = \""+userId+"\"";
stmt.executeUpdate(sql);
stmt.close();
conn.close();
}
//修改用户
public void UpdateDepartment(HashMap d) throws Exception
{
HashMap db_d = GetDepartment(d.get("user_id").toString());
Iterator iter = d.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
Object key = entry.getKey();
Object val = entry.getValue();
db_d.put(key, val);
}
String sql =
"update user "
+ " set "
+ " user_name = ?, "
+ " pass_word = ?, "
+ " gender = ? "
+" where user_id = ?";
Connection conn = getConn();
PreparedStatement stmt = conn.prepareStatement(sql);
stmt.setString(1, ToString(db_d.get("user_name")));
stmt.setString(2, ToString(db_d.get("pass_word")));
stmt.setString(3, ToString(db_d.get("gender")));
stmt.setString(4, ToString(db_d.get("user_id")));
stmt.executeUpdate();
stmt.close();
conn.close();
}
2.查功能
JSP页面查功能
function search() {
var key = mini.get("key").getValue();
//通过输入框的KEY获取到要查询的值
grid.load({ key: key });
}
查询Action类
public class fenyeAction {
private int pageIndex; //查询起始位置
private int pageSize; //一次查询几条
private String sortField; //排序字段
private String SortOrder; //排序顺序
private String key;//用户输入的值
public String fenye() throws Exception{
HashMap result = new TestDB().SearchEmployees(key,pageIndex,pageSize, sortField, SortOrder); //从数据库查询到数据存入Map数组
PrintWriter out = ServletActionContext.getResponse().getWriter();
String json = JSON.Encode(result);
out.print(json);
out.flush();
out.close();
return "fenye";
}
public int getPageIndex() {
return pageIndex;
}
public void setPageIndex(int pageIndex) {
this.pageIndex = pageIndex;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public String getSortField() {
return sortField;
}
public void setSortField(String sortField) {
this.sortField = sortField;
}
public String getSortOrder() {
return SortOrder;
}
public void setSortOrder(String sortOrder) {
SortOrder = sortOrder;
}
public String getKey() {
return key;
}
public void setKey(String key) {
this.key = key;
}
}
查询方法
public HashMap SearchEmployees(String key, int index, int size, String sortField, String sortOrder) throws Exception
{
//System.Threading.Thread.Sleep(300);
if(key == null) key = "";
String sql = "select *from user where user_name like ‘%" + key + "%‘ \n";
if (StringUtil.isNullOrEmpty(sortField) == false)
{
if ("desc".equals(sortOrder) == false) sortOrder = "asc";
sql += " order by " + sortField + " " + sortOrder;
}
else
{
sql += " order by user_id desc";
}
ArrayList dataAll = DBSelect(sql);
ArrayList data = new ArrayList();
int start = index * size, end = start + size;
for (int i = 0, l = dataAll.size(); i < l; i++)
{
HashMap record = (HashMap)dataAll.get(i);
if (record == null) continue;
if (start <= i && i < end)
{
data.add(record);
}
//record.put("createtime", new Timestamp(100,10,10,1,1,1,1));
}
HashMap result = new HashMap();
result.put("data", data);
result.put("total", dataAll.size());
//minAge, maxAge, avgAge
ArrayList ages = DBSelect("select min(user_id) as minAge, max(user_id) as maxAge, avg(user_id) as avgAge from user");
HashMap ageInfo = (HashMap)ages.get(0);
result.put("minAge", ageInfo.get("minAge"));
result.put("maxAge", ageInfo.get("maxAge"));
result.put("avgAge", ageInfo.get("avgAge"));
return result;
}