【正文】 attribute, dow nloads Applet, as well as the execution difficulty with codes and the time consuming function with other methods. adapts the platform Nearly all platforms support Java, JSP+JavaBeans to be possible to pass unimpeded nearly under all platforms. Transplants from a platform to other platform, JSP and JavaBeans does not even need to translate, because the Java byte code is standard has nothing to do with the platform. database connection In Java connects the database the technology is the JDBC, Java procedure is connected through the JDBC driver and the database, operations and so on execution inquiry, extraction data. Sun Corporation has also developed JDBCODBC bridge, uses this technical Java procedure to be possible to visit has the ODBC driver database, at present the majority database systems have the ODBC driver, therefore the Java procedure can visit such as Oracle, Sybase, MS SQL Server and databases and so on MS Access. In addition, through the development marking storehouse, the JSP technology may further expand. The third party development personnel and other personnel may found their marking storehouse for the monly used function. This enables the Web pa ge development personnel to be able to use the familiar tool and to be similar to marking same carries out the specific function ponent to carry on the work. The JSP technology very easy conformity to many kinds of application architecture, to use the e xtant tool and the skill, and can expand to the support enterprise distributional application. 3 Eclipse function synopsis More and more Java development personnel already started the productivity which and the quality ine appreciates Eclipse JDT to pro vide. It was the Java editor provides grammar Gao Liang to demonstrate that the formatting, the fold, the content were auxiliary, code template and so on many functions. It grows unceasingly available restructuring and the code generation function set perm its you in a higher rank the operation code, and automated usual code intensity duty and easy wrong duty. Moreover, in develops the code and uses JDT to pile and to carry out the JUnit test builtin support carries on the unit testing after the code, may use Eclipse the firstclass Java debugger debugging w hen the movement meets any question. Besides JDT, Eclipse SDK the most popular downloading also contains Plugin Development Environment(PDE). PDE used the specific function to expand JDT to construct the Eclipse plugin unit based on the Eclipse application procedure basic construction agglomeration. In fact, uses the tool w hich provides by Eclipse itself to be able to surmount the Java development, may expand the existing Eclipse appl ication procedure, or even founds the brandnew application procedure. Eclipse by a script level constitution, contains in many functional modules or the Eclipse terminology socalled “the plugin unit”. The plugin unit is provides all functions in the Eclipse application procedure the module. They cooperate through its API to pay the final oute together. In Eclipse, even the most foundation39。s function, for instance the search and the start installment39。s plugin unit, seals in the plugin unit. In order to expand the existing Eclipse function or carry on the construction in above, the plugin unit the concrete expansion contribution for the expansion spot w hich will expose by other plug in units. Usually, the plugin unit concentrates the specific regio n responsibility, and gives through or a many expansion way other responsibility designation other plugin units. For example, a plugin unit allows you parallel to pare two documents visibly the contents, but it will not care how to read these document s even how to explain these document structure。 This is other plugin unit39。s work. When pared with two documents, this plugin unit first inspects whether to have another plugin unit to be possible to explain these document structure. If found one, it to the plugin unit inquiry related file organization information w hich found, and used this information in the parison process. May see that the modular construction was Eclipse has provided the huge flexibility, and provided one to be possible to support the massive application procedure platform which the original design has not expected. 4 Structs function synopsis Struts is a MVC frame (Framework), uses in developing Java fast the Web application. Struts realizes the key point in C(Controller), Action w hich and we have custommade including ActionServlet/RequestProcessor, was also V(View) provides a series of rows to have custommade the label (Custom Tag). Spring is a light vessel (lightweight container), its core is the Bean factory (Bean Factory), with constructs M(Model) w hich we need. Above this foundation, Spring has provided AOP (AspectOriented Programming, face stratification plane programming) realization, provides under the nonmanagement environment with it to declare services and so on way business, security。 Is more convenient to Bean factory expansion ApplicationContext we to realize the J2EE application。 DAO/ORM realizes facilitates us to carry on the database the development。 Web MVC and Spring Web have