OFBiz learning practices

Additional points:
1. Construct a dynamic query statement for OFBiz
(1) construct query Conditions
(2) Add a logical relationship between each condition and use maincond = new entityconditionlist (andexprs, entityoperator. And );
(3) set the list of fields to be displayed
(4) set the sorting Field List
(5) set the distinct list
Entityfindoptions findopts = new entityfindoptions (true, entityfindoptions. type_scroll_insensitive, entityfindoptions. concur_read_only, true );
(6) obtain the Object List
Entitylistiterator PLI = delegator. findlistiteratorbycondition (entityname, maincond, null, fieldstoselect, orderby, findopts );
(7) a specific instance of a dynamic query statement
<%
String entityname = "study ";
List andexprs = new arraylist ();
String number = "";
String name = "";
String sex = "";
String Tel = "";
// Genericdelegator delegator = genericdelegator. getgenericdelegator ("default ");
Entityconditionlist maincond = NULL;
If (request. getparameter ("Number ")! = NULL)
Number = request. getparameter ("Number"). tostring ();
If (request. getparameter ("name ")! = NULL)
Name = request. getparameter ("name"). tostring ();
If (request. getparameter ("sex ")! = NULL)
Sex = request. getparameter ("sex"). tostring ();
If (request. getparameter ("tel ")! = NULL)
Tel = request. getparameter ("tel"). tostring ();
// Construct query Conditions
If (number. compareto ("")! = 0)
Andexprs. Add (New entityexpr ("Number", entityoperator. Equals, number ));
If (name. compareto ("")! = 0)
Andexprs. Add (New entityexpr ("name1", true, entityoperator. Like, "%" + name + "%", true ));
If (sex. compareto ("")! = 0)
Andexprs. Add (New entityexpr ("sex1", true, entityoperator. Like, "%" + sex + "%", true ));
If (Tel. compareto ("")! = 0)
Andexprs. Add (New entityexpr ("tel", true, entityoperator. Like, "%" + Tel + "%", true ));
// Logical relationship between each condition
If (andexprs. Size ()> 0)
Maincond = new entityconditionlist (andexprs, entityoperator. And );
// List of fields to be displayed
List fieldstoselect = new arraylist ();
Fieldstoselect. Add ("Number ");
Fieldstoselect. Add ("name1 ");
Fieldstoselect. Add ("sex1 ");
Fieldstoselect. Add ("tel ");
// List of sorting Fields
List orderby = utilmisc. tolist ("Number", "name1 ");
// Distinct list
Entityfindoptions findopts = new entityfindoptions (true, entityfindoptions. type_scroll_insensitive, entityfindoptions. concur_read_only, true );
// Obtain the Object List
Entitylistiterator PLI = delegator. findlistiteratorbycondition (entityname, maincond, null, fieldstoselect, orderby, findopts );
While (PLI. hasnext ())
{
Genericvalue Cust = (genericvalue) PLI. Next (); %>
<Tr>
<TD> <% = Cust. getstring ("Number") %> </TD>
<TD> <% = Cust. getstring ("name1") %> </TD>
<TD> <% = Cust. getstring ("sex1") %> </TD>
<TD> <% = Cust. getstring ("tel") %> </TD>
</Tr>
<% }%>

</Table>

2. All image files are stored in the images directory.
3. Set the image tag <OFBiz: contenturl> image path </OFBiz: contenturl>
4. link tag <OFBiz: URL> request set in control. xml </OFBiz. url>
5. <region: render section = 'header'/> introduce the file defined by the header.
The header identifier is defined in regions. xml.
<Define id = 'main _ reg 'template ='/templates/main_template1.jsp '>
<Put section = 'title'> application page </put> <! -- This is a default and is meant to overridden -->
<Put section = 'header' content = '/shortdes/bottom. jsp'/>
<Put section = 'leftbar' content = '/shortdes/left. jsp'/>
<Put section = 'middle' content = '/Includes/middle. jsp'/>
<Put section = 'content' content = '/Includes/middle. jsp'/> <! -- This is a default and is meant to overridden -->
<Put section = 'top' content = '/shortdes/top. jsp'/>
<Put section = 'error' type = "jpublish" content = '/Includes/errormsg. FTL'/>
<! -- <Put section = 'footer 'type = "jpublish" content ='/Includes/footer. FTL '/> -->
</Define>
Then the following definitions can be used for other pages:
<Define id = 'basepubemp' region = 'main _ reg '>
<Put section = 'title'> View basepubemp </put>
<Put section = 'content' content = '/basepubemp. jsp'/>
</Define>
Note that the block specified by content here is the content defined above.
6. These labels are quite simple. There are examples in OFBiz. Just take a look.

The shark workflow in OFBiz will be described later.