CODEWITHSUNDEEP
model-view-controllerstruts2struts-tags
user3607180
user3607180

Reputation: 175

How to view data from databases on JSP without using scriptlets or Java code in Struts 2?

I am trying to view data from databases on JSP, so now I come up with idea to use it without scriptlets or Java code inside. I have learned the modelDriven interceptor and some other interceptors to use in struts.xml, but I don't know how to implement it.

Beantest.java:

public String getId()
    {
        return id;
    }

    public void setId(String id)
    {
        this.id = id;
    }

    public String getBook()
    {
        return Book;
    }

    public void setBook(String book)
    {
        Book = book;
    }

    public String getAuthor()
    {
        return Author;
    }

    public void setAuthor(String author)
    {
        Author = author;
    }

    public String getAvailbleqty()
    {
        return Availbleqty;
    }

    public void setAvailbleqty(String availbleqty)
    {
        Availbleqty = availbleqty;
    }

    public String getCategory()
    {
        return Category;
    }

    public void setCategory(String category)
    {
        Category = category;
    }

DataAction.java:

public List<Beantest> viewbook()
{

    List<Beantest> al=new ArrayList<Beantest>();
    Beantest bt = new Beantest();
    try
    {
        String sql = "select * from Bookavaible";
        Statement stmt;
        stmt = conn.createStatement();
        ResultSet rs = stmt.executeQuery(sql);
        while (rs.next())
        {
            bt.setId(rs.getString("id"));
            bt.setBook(rs.getString("Book"));
            bt.setAuthor(rs.getString("Author"));
            bt.setAvailbleqty(rs.getString("Availbleqty"));
            bt.setCategory(rs.getString("Category"));
            al.add(bt);
        }
    } 
    catch (SQLException e)
    {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return al;

}

Actiontest.java:

 public class ActionTest {
    Beantest bt;
    
    private List<Beantest> beans;

    public String viewbookaction()
    {
        DataAction da = new DataAction();
        beans = da.viewbook();
        return ActionSupport.SUCCESS;
    }

    public List<Beantest> getBeans()
    {
        return beans;
    }

Bookview.jsp:

<s:action name="VBA">
        <td>id:</td>

        <td>Book:</td>

        <td>Author:</td>

        <td>Availbleqty:</td>

        <td>Category:</td>

</s:action>

web.xml:

  <?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
      <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
      </filter>
      <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
      </filter-mapping>
      <welcome-file-list>
        <welcome-file>BookView.jsp</welcome-file>
      </welcome-file-list>
    </web-app>

strut2.xml:

<package name="a" namespace="/">
    <action name="VBA" class="Action.ActionTest" method="viewbookaction">
        <result name="success">/BookView.jsp</result>
    </action>
</package>

Upvotes: 0

Views: 1710

Answers (2)

Roman C
Roman C

Reputation: 1

Don't use <s:action> tag in JSP, until you know how and why to do that. To display values in JSP you are not needed it at all. You should use struts tags to access action bean properties. For example you can print values to the JSP out using <s:property> tag. For example

<s:iterator value="beans">    
    id: <s:property value="id"/><br>    
    Book: <s:property value="book"/><br>    
    Author: <s:property value="author"/><br>
    Availbleqty: <s:property value="availbleqty"/><br>    
    Category: <s:property value="category"/><br>    
<s:/iterator>

The FilterDispatcher is deprecated and you should replace it with StrutsPrepareAndExecuteFilter. See web.xml docs. Also see this answer for Need suggestions regarding project implementation in Struts and Hibernate.

Upvotes: 3

Rajeshkumar
Rajeshkumar

Reputation: 895

Change your web.xml and stuts.xml as below.

Struts.xml

<struts>
<constant name="struts.devMode" value="true" />
<package name="a" namespace="/" extends="struts-default">
    <action name="" class="Action.ActionTest" method="viewbookaction">
        <result name="success">/BookView.jsp</result>
    </action>
</package>

web.xml

<filter>
    <filter-name>struts2</filter-name>
    <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

That's all. Simply run.

Upvotes: 1

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