make a web service call in java

... This causes the RetrieveCustomers() method to return a DataSet with a DataTable containing all the rows from the Customers table (see Figure 17.6 ). Notice that the space characters in the ... whereClause, the RetrieveCustomers() method returns a DataSet with a DataTable containing the one row from the Customers table with a CustomerID of ALFKI, as shown in Figure 17.5 . Notice that ... a whereClause of CustomerID= 'ALFKI' As you can see from Figure 17.5 , the DataSet is returned as an XML document. You can use this XML in your client programs that use the Web service. ...

Ngày tải lên: 24/10/2013, 12:15

... null; Creating a Web Service In this section, you'll create a Web service that contains a method that returns a DataSet containing rows from the Customers table. Start VS .NET and select ... SqlCommand mySqlCommand = mySqlConnection.CreateCommand(); mySqlCommand.CommandText = selectString; SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter(); mySqlDataAdapter.SelectCommand = ... you'll be adding your own .asmx file next, and it's easier to simply delete the initial Service1 .asmx file. Select Project ➣ Add Web Service, and enter Customers.asmx in the Name...

Ngày tải lên: 28/10/2013, 19:15

... Logging in using a Microsoft Passport account Note If you don't have a Passport account, click the Get One Now link and sign up for a Passport account. Enter your email address, name, and ... intranet and build an internal system made up of Web services written internally. In this section, you'll register the NorthwindWebService you created earlier in this chapter. To do that, ... Start Page tab, click the XML Web Services link, and then click the Register Your XML Web Service Today link (see Figure 17.11 ). You can search for Web services using the Find A Service page....

Ngày tải lên: 07/11/2013, 15:15

... load a DataSet from this stream, inferring or reading schema information as needed. 2. You are building a client application that calls a Web service. What must you do before calling a Web ... students in your class. ! What are some other ways that you could fill the local DataSet with data other than by using a DataAdapter? ! What is the purpose of creating an empty, local instance ... a DataSet? ! Why use a strongly typed DataSet? Transition to Practice Exercise: Now that you have seen examples of creating a Web service, you can practice creating a Web service programmatically....

Ngày tải lên: 10/12/2013, 16:15

... Using a Web Service In this section, you'll see how to use a Web service in a Windows application. Start VS .NET and select File ➣ New ➣ Project. Create a new Windows application named ... creates an object named myCustomersService to call your Web service, and displays the returned results from the RetrieveCustomers() method in customersDataGrid. Compile and run your Windows application ... Add Web Reference dialog box, which allows you to search for Web services. Enter the following URL in the Address box, and press the Enter key on your keyboard: http://localhost/NorthwindWebService/Customers.asmx...

Ngày tải lên: 14/12/2013, 22:15

... a Web service can be thought of as a component with a truly global reach. Web services use a standard, accepted, and well-understood protocol called HTTP to transmit data, and a portable data ... calls into SOAP requests. You will do this later in this chapter. For now, you can concentrate on building a Web service. Web Services Enhancements Not long after Web services became a mainstream ... values, and for describing the types of parameters and return values. When a client calls a Web service, it must specify the method and parameters by using this XML grammar. SOAP is an industry...

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Ngày tải lên: 03/06/2014, 00:52

... “.;c:\jakarta-tomcat\lib\servlet.jar;” ➥ de/tarent/forum/OutputChatMessagesTag .java -d /classes javac -classpath “.;c:\jakarta-tomcat\lib\servlet.jar;” ➥ de/tarent/forum/OutputDebugInfoTag .java -d /classes javac -classpath “.;c:\jakarta-tomcat\lib\servlet.jar;” ➥ de/tarent/forum/NoCacheHeaderTag .java ... de/tarent/forum/TransformTag .java -d /classes javac de/tarent/forum/NodeKey .java -d /classes javac de/tarent/forum/BonNode .java -d /classes javac -classpath “.;c:\jakarta-tomcat\lib\servlet.jar;” ➥ de/tarent/forum/ForestHashtable .java ... “.;c:\jakarta-tomcat\lib\servlet.jar;c:\xalan- ➥ j_2_0_1\bin\xalan.jar;c:\xalan-j_2_0_1\bin\xerces.jar;” ➥ de/tarent/forum/Xalan2Transformer .java -d /classes javac -classpath “.;c:\jakarta-tomcat\lib\servlet.jar;c:\xalan- ➥ j_2_0_1\bin\xalanj1compat.jar;c:\xalan-j_2_0_1\bin\xalan.jar;c:\xalan- ➥ j_2_0_1\bin\xerces.jar;” de/tarent/forum/TransformTag.java...

Ngày tải lên: 14/12/2013, 22:15

... c:\jakarta-tomcat\classes;c:\jakarta- tomcat\lib\ant.jar;c:\jakarta-tomcat\lib\jaxp.jar;c:\jakarta- ➥ tomcat\lib\servlet.jar;c:\jakarta-tomcat\lib\parser.jar;c:\jakarta-tomcat\lib\we ➥ bserver.jar;c:\jakarta-tomcat\lib\jasper.jar;c:\jakarta- ➥ tomcat\lib\xalanservlet.jar;c:\jakarta-tomcat\lib\xerces.jar;c:\jakarta- ➥ tomcat\lib\xalanj1compat.jar;c:\jakarta-tomcat\lib\aaxalan.jar;c:\jdk1.3\lib\too ➥ ls.jar 2001-05-23 ... CLASSPATH. Using CLASSPATH: c:\jakarta-tomcat\classes;c:\jakarta- tomcat\lib\ant.jar;c:\jakarta-tomcat\lib\jaxp.jar;c:\jakarta- ➥ tomcat\lib\servlet.jar;c:\jakarta-tomcat\lib\parser.jar;c:\jakarta-tomcat\lib\we ➥ bserver.jar;c:\jakarta-tomcat\lib\jasper.jar;c:\jakarta- ➥ tomcat\lib\xalanservlet.jar;c:\jakarta-tomcat\lib\xerces.jar;c:\jakarta- ➥ tomcat\lib\xalanj1compat.jar;c:\jakarta-tomcat\lib\aaxalan.jar;c:\jdk1.3\lib\too ➥ ls.jar 2001-05-23 ... page, and an example of another JSP page calling a Java servlet (actually, calling a servlet that calls a JSP page). You can start building upon this skele- ton to develop your MyApp Web application. 3.7...

Ngày tải lên: 14/12/2013, 22:15

... discussed and heralded in particular as a great benefit in connecting legacy applications to modern Web- based applications. Within a Web application, passing even one parameter that contains XML data ... environments. 5.4 XML Data Flows in Web Applications We believe that passing XML data within a Web application will turn out to be as important as passing XML data between systems and applications.The latter ... database management system because handling chat data is an obvious job.We decided against that for several rea- sons. One is that we did not want to assume that all our readers are familiar...

Ngày tải lên: 14/12/2013, 22:15

... bonForumXML (a ForestHashtable ) as a string. Now we decided to make it the input XML stream for the Xalan XSLT processor as part of our TransformTag class. Displaying the available chats would mean ... of actors, we can hardly have a program intelligent enough to maintain a meaningful user experience. In the bonForum Web application, we also use another mechanism to relate differ- ent Web pages ... discussion about applet use in Java Web applications. First, we made an applet that included a timer mechanism based on putting a thread to sleep.We then set it up to repeatedly call the showDocument method...

Ngày tải lên: 14/12/2013, 22:15

... Topic ■ Performing thread synchronization ■ Synchronizing the XML database ■ Finding the chat and actor status in Chat ■ Rejoining existing chats ■ Starting a chat ■ Adding a host actor ■ Adding a chat element 08 ... to each JSP-produced page of a bonForum instance. The incoming request parameters are validated and made available to the Web application in whatever scope is appropriate.We will give two examples ... “sessionMaxInactiveMinutes”, sessionMaxInactiveMinutes ); } As a second example of request parameter handling, see how simply the age value input by a bonForum user is made available in the session...

Ngày tải lên: 14/12/2013, 22:15

... If the actor was in the chat, always join it with the previous status; otherwise, warn and ask again. 3. If the actor was in the chat, always join as a guest; otherwise, warn and ask again. 08 ... database (now a ForestHashtable ) n Initializes the XML database for use as a chat Web app n Loads XML files into a database using its methods n Dumps the content of the database as XML in a ... classes, one for Xalan -Java 1 and one for Xalan- Java 2. Simplifying greatly, here are the statements called by the TransformTag class to get its XML database in a string: private static BonForumStore...

Ngày tải lên: 14/12/2013, 22:15

... about vari- ables that are used in the Web application. It will assume as it translates the tag that these variables are available as page attributes. Later, when we look at the translated Java ... de.tarent.forum; import javax.servlet.jsp.tagext.*; public class BonForumTagExtraInfo extends TagExtraInfo { public VariableInfo[] getVariableInfo(TagData data) { return new VariableInfo[] { new VariableInfo(“output”, “String”, true, 10 ... JSP translation time about tags and the variables they use.These classes are TagAttributeInfo , TagData , TagExtraInfo , TagInfo , TagLibraryInfo , and VariableInfo . The doStartTag( ) Method Implementing...

Ngày tải lên: 14/12/2013, 22:15

... two classes to encapsulate the steps required for either Xalan -Java 1 or Xalan -Java 2 .The classes are called Xalan1Transformer and Xalan2Transformer . Each has one method called transform , which ... without using any tabs or spaces! Thankfully, that bug seems to be gone now—at least, while using the Xalan- Java 1 compatibility JAR or the Xalan -Java 2 JAR. 10.8 Displaying the Available bonForums We ... system_executes_command.jsp. Note that if you have Xalan -Java- 2 , you can also set xalanVersion to Xalan Java 1 , as long as the compatibility JAR file is accessible, for example, as TOMCAT_HOME\lib\xalanj1compat.jar. Let’s...

Ngày tải lên: 14/12/2013, 22:15