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http://www.iteye.com/problems/44119http://hi.baidu.com/lapson_85/item/7733586e60b08500a1cf0f8d————————————————————————————————————————————————————————————————————————————————————————1. JSON data format:var map = {"uname": "," upwd ":", "role": {"rolename": "," Rolelevel ": '}}Bind this JSON format to the DataGrid's filed property:Columns: [[{Field:uname,Title:uname,WIDTH:200,Rowspan:2,Align: ' center '},{Field:upwd,Title:upwd,WIDTH:80,Rowspan:2,Align: ' center '},{Field: ' Role.rolename ',Title:

In recent project development, a lot of domain models have been used, (POJO refers only to setter/getter/tostring simple classes, including DO/DTO/BO/VO, etc.), and then encounters many scenarios where the model attributes are automatically converted, Initial direct use of the Set,get method, but led to a large number of garbage code, and later research, found that can be used by some tool classes to complete the conversion Beanutils.copyproperties

JSON object + * @paramCLS A * @paramobj the * @return + */ - Public StaticJsonobject Getjson (classcls, Object obj) { $Jsonobject JSON =NewJsonobject (); $field[] Fieldarray =cls.getdeclaredfields (); - for(Field field:fieldarray) { -String FieldName =field.getname (); theString methodName = "Get" + fieldname.substring (0, 1). toUpperCase () + fieldname.substring (1); - Try {WuyiMethod method =Cls.getmethod (methodName); theObject fieldobject = Meth

1, create a Java project and then hibernate environment collocation2. Create a com.test package, create a class in the package Packagetest;Importorg.hibernate.cfg.Configuration;ImportOrg.hibernate.tool.hbm2ddl.SchemaExport; Public classCreateTable { Public Static voidMain (string[] args) {Configuration configuration=NewConfiguration (). Configure (); Schemaexport Export=Newschemaexport (configuration); Export.create (true,true); }}3. Create a database in the database with the same name as the da

Struts 2.0 supports more advanced Pojo access, first defining a User.java class. Separating the username and password attributes from the login class can make the system structure clearer and especially useful for developing multi-tier systems. User.java Package com.bulktree.struts2;public class User {Private String username;private String password;Public String GetUserName () {System.out.println ("******getusername ()");return username;}public void

corresponding entity class and mapper file.Configuration has been completed, other configuration information can wait for the back of their own reference, where the comments are written more clearly.Look at the 2nd step again:Open the Generator.java file, run the main method inside, after running to refresh the project, you can see the following project directory structure (i configured here two table).650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M01/7F/43/wKiom1cYM1Lj__w3AABQFzdN_-A1

handle business logic like this, we can deal with BO.POJO (Plain ordinary Java object) simple, rule-free Java objectsJava objects that are purely traditional in meaning. In some object/relation Mapping tools, the Persisent object that maintains database table records is a pure Java object that conforms to the Java Bean specification and does not add other properties and methods. My understanding is the most basic Java Bean, only attribute fields and setter and getter Method!.DAO (data Access ob

For java. lang. reflect. field, that is, a class domain instance, can be obtained through the following methods: Field [] fields = clazz. getDeclaredFields (); Field [] fields = clazz. the getFields (); getDeclaredFields method can obtain any visibility attributes of the class, but does not include the parent class. The getFields method can only obtain public attributes including the parent class. So there is such a problem. What should I do if I want to obtain a Field instance that includes all

provide a place for the data to survive.The PO is stateful, and each property represents its current state. It is the object representation of the physical data. Using it, we can decouple our programs from physical data and simplify the transformation between the object data and the physical data.3. Vo's properties are different depending on the current business, that is, each of its properties corresponds to the name of the data needed for the current business logic.The properties of the PO co

----------------------------------------------------------In the Entity classPublic Categorybeanpojo (Integer ID, String type, Boolean hot, string login,String name, String pass, Integer aid) {Super ();This.id = ID;This.type = type;This.hot = hot;This.login = login;THIS.name = name;This.pass = pass;This.aid = aid;}--------------------------------------------------------------------------In DAOPublic listPagebean Pagebean) throws exception{TODO auto-generated Method StubStringBuffer sub=new Strin

One, Po:persistant object persistent objects, can be seen as a Ava object mapped to a table in the database.The simplest PO is a record in a table in the corresponding database, and multiple records can be used in the PO's collection PO should not contain any operations on the database.Two, Vo:value object value objects. Typically used for data transfer between business tiers, as is the case with PO, which contains only data. But it should be abstracted out of business objects that can correspon

logic like this, we can deal with BO.POJO (Plain ordinary Java object) simple, rule-free Java objectsJava objects that are purely traditional in meaning. In some object/relation Mapping tools, the Persisent object that maintains database table records is a pure Java object that conforms to the Java Bean specification and does not add other properties and methods. My understanding is the most basic Java Bean, only attribute fields and setter and getter Method!.DAO (data Access Object) Access Obj

corresponding PO has 100 attributes.But we just show 10 fields on the interface,The client uses the Web service to get the data, and there is no need to pass the entire PO object to the client.At this point we can pass the result to the client with a DTO with only these 10 attributes, and this will not expose the service-side table structure. After the client is reached, if the interface is displayed with this object, then its identity will be converted to VO.O/R Mapper object/relationship Mapp

objectsJava objects that are purely traditional in meaning. In some object/relation Mapping tools, the Persisent object that maintains database table records is a pure Java object that conforms to the Java Bean specification and does not add other properties and methods. My understanding is the most basic Java Bean, only attribute fields and setter and getter Method!.DAO (data Access object) Access objectsis a sun's standard Java EE design pattern, which has an interface that is DAO, which has

methods!.DAO (data Access object) Access objectsis one of Sun's standard Java EE design patterns, one of which is DAO, which is responsible for the operation of the persistence layer. Provides interfaces for the business layer. This object is used to access the database. Usually used in conjunction with PO, DAO contains various methods of operation of the database. Combine PO to perform related operations on the database. Sandwiched between business logic and database resources. With VO, provid

The Hibernate data model is used to encapsulate data, and development requires compliance with the following specifications:1) provides a common, non-parametric construction method (can be used automatically generated)If you use projection technology, be sure to explicitly declare a public parameterless construction method2) Provide an identity property as the primary key for the object, and map the database table primary keyThe UUID is usually used as the primary key3) Privatization of all othe

java.io.Serializable { private Integer stuid; private String stunetname; private String Stupassword; private String sturealname; private String stuemail; private String stuimg; private String stuinfo; ..} The overall step is not too cumbersome, if the table is more, you can save a lot of development effort. After you have designed the table structure, you can generate a primary version of the Java file at once, and then manually modify it on the basis of the primary version of the J

Label:First step: Configure the data source Init-method= "Init" destroy-method= "Close" >-Name= "maxpoolpreparedstatementperconnectionsize" value= "/>"-- Step Two: Configure Sessionfactroy Hibernate.dialect=${hibernate.dialect}Hibernate.hbm2ddl.auto=${hibernate.hbm2ddl.auto}Hibernate.show_sql=${hibernate.show_sql}Hibernate.format_sql=${hibernate.format_sql}Hibernate.cache.use_second_level_cache=${hibernate.cache.use_second_level_cache}Hibernate.cache.provider_class=${hibernate.cache.provider_cla

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Scrapy crawls school news reports and scrapy crawls news Capture all the news and consulting on the official website of Sichuan University Institute of Public Management (http://ggglxy.scu.edu.cn.Lab Process 1. Determine the capture target.2. Create capture rules.3. 'write/debug' capture rules.4. Obtain captured data1. Determine the capture target We need to capt