spring-mvc-matrix-variables - manually merging

spring-mvc-java/src/main/java/com/baeldung/model/Company.java

@@ -0,0 +1,38 @@
+package com.baeldung.model;
+
+public class Company {
+
+    private long id;
+    private String name;
+
+    public Company() {
+        super();
+    }
+
+    public Company(final long id, final String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(final String name) {
+        this.name = name;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(final long id) {
+        this.id = id;
+    }
+
+    @Override
+    public String toString() {
+        return "Company [id=" + id + ", name=" + name + "]";
+    }
+
+}

spring-mvc-java/src/main/java/com/baeldung/model/Employee.java

@@ -8,15 +8,17 @@ public class Employee {
     private long id;
     private String name;
     private String contactNumber;
+    private String workingArea;
 
     public Employee() {
         super();
     }
 
-    public Employee(final long id, final String name, final String contactNumber) {
+    public Employee(final long id, final String name, final String contactNumber, final String workingArea) {
         this.id = id;
         this.name = name;
         this.contactNumber = contactNumber;
+        this.workingArea = workingArea;
     }
 
     public String getName() {
@@ -43,9 +45,17 @@ public class Employee {
         this.contactNumber = contactNumber;
     }
 
+    public String getWorkingArea() {
+        return workingArea;
+    }
+
+    public void setWorkingArea(final String workingArea) {
+        this.workingArea = workingArea;
+    }
+
     @Override
     public String toString() {
-        return "Employee [id=" + id + ", name=" + name + ", contactNumber=" + contactNumber + "]";
+        return "Employee [id=" + id + ", name=" + name + ", contactNumber=" + contactNumber + ", workingArea=" + workingArea + "]";
     }
 
 }

spring-mvc-java/src/main/java/com/baeldung/spring/web/config/WebConfig.java

@@ -13,12 +13,14 @@ import org.springframework.http.converter.HttpMessageConverter;
 import org.springframework.web.multipart.commons.CommonsMultipartResolver;
 import org.springframework.web.servlet.ViewResolver;
 import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.PathMatchConfigurer;
 import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
 import org.springframework.web.servlet.view.InternalResourceViewResolver;
 import org.springframework.web.servlet.view.JstlView;
 import org.springframework.web.servlet.view.ResourceBundleViewResolver;
 import org.springframework.web.servlet.view.XmlViewResolver;
+import org.springframework.web.util.UrlPathHelper;
 
 @Configuration
 @EnableWebMvc
@@ -96,4 +98,12 @@ public class WebConfig extends WebMvcConfigurerAdapter {
 
         return list;
     }
+
+    @Override
+    public void configurePathMatch(final PathMatchConfigurer configurer) {
+        final UrlPathHelper urlPathHelper = new UrlPathHelper();
+        urlPathHelper.setRemoveSemicolonContent(false);
+
+        configurer.setUrlPathHelper(urlPathHelper);
+    }
 }

spring-mvc-java/src/main/java/com/baeldung/web/controller/CompanyController.java

@@ -0,0 +1,56 @@
+package com.baeldung.web.controller;
+
+import com.baeldung.model.Company;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.ModelMap;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.servlet.ModelAndView;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@Controller
+public class CompanyController {
+
+    Map<Long, Company> companyMap = new HashMap<>();
+
+    @RequestMapping(value = "/company", method = RequestMethod.GET)
+    public ModelAndView showForm() {
+        return new ModelAndView("companyHome", "company", new Company());
+    }
+
+    @RequestMapping(value = "/company/{Id}", produces = { "application/json", "application/xml" }, method = RequestMethod.GET)
+    public @ResponseBody Company getCompanyById(@PathVariable final long Id) {
+        return companyMap.get(Id);
+    }
+
+    @RequestMapping(value = "/addCompany", method = RequestMethod.POST)
+    public String submit(@ModelAttribute("company") final Company company, final BindingResult result, final ModelMap model) {
+        if (result.hasErrors()) {
+            return "error";
+        }
+        model.addAttribute("name", company.getName());
+        model.addAttribute("id", company.getId());
+
+        companyMap.put(company.getId(), company);
+
+        return "companyView";
+    }
+
+    @RequestMapping(value = "/companyEmployee/{company}/employeeData/{employee}", method = RequestMethod.GET)
+    @ResponseBody
+    public ResponseEntity<Map<String, String>> getEmployeeDataFromCompany(@MatrixVariable(pathVar = "employee") final Map<String, String> matrixVars) {
+        return new ResponseEntity<>(matrixVars, HttpStatus.OK);
+    }
+
+    @RequestMapping(value = "/companyData/{company}/employeeData/{employee}", method = RequestMethod.GET)
+    @ResponseBody
+    public ResponseEntity<Map<String, String>> getCompanyName(@MatrixVariable(value = "name", pathVar = "company") final String name) {
+        final Map<String, String> result = new HashMap<String, String>();
+        result.put("name", name);
+        return new ResponseEntity<>(result, HttpStatus.OK);
+    }
+}

spring-mvc-java/src/main/java/com/baeldung/web/controller/EmployeeController.java

@@ -1,35 +1,40 @@
 package com.baeldung.web.controller;
 
-import java.util.HashMap;
-import java.util.Map;
-
+import com.baeldung.model.Employee;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.ui.ModelMap;
 import org.springframework.validation.BindingResult;
-import org.springframework.web.bind.annotation.ControllerAdvice;
-import org.springframework.web.bind.annotation.ModelAttribute;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestMethod;
-import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.*;
 import org.springframework.web.servlet.ModelAndView;
 
-import com.baeldung.model.Employee;
+import java.util.*;
 
+@SessionAttributes("employees")
 @Controller
 @ControllerAdvice
 public class EmployeeController {
 
     Map<Long, Employee> employeeMap = new HashMap<>();
 
+    @ModelAttribute("employees")
+    public void initEmployees() {
+        employeeMap.put(1L, new Employee(1L, "John", "223334411", "rh"));
+        employeeMap.put(2L, new Employee(2L, "Peter", "22001543", "informatics"));
+        employeeMap.put(3L, new Employee(3L, "Mike", "223334411", "admin"));
+    }
+
     @RequestMapping(value = "/employee", method = RequestMethod.GET)
     public ModelAndView showForm() {
         return new ModelAndView("employeeHome", "employee", new Employee());
     }
 
-    @RequestMapping(value = "/employee/{Id}", produces = { "application/json", "application/xml" }, method = RequestMethod.GET)
-    public @ResponseBody Employee getEmployeeById(@PathVariable final long Id) {
+    @RequestMapping(value = "/employee/{Id}", produces = {"application/json", "application/xml"}, method = RequestMethod.GET)
+    public
+    @ResponseBody
+    Employee getEmployeeById(@PathVariable final long Id) {
         return employeeMap.get(Id);
     }
 
@@ -40,6 +45,7 @@ public class EmployeeController {
         }
         model.addAttribute("name", employee.getName());
         model.addAttribute("contactNumber", employee.getContactNumber());
+        model.addAttribute("workingArea", employee.getWorkingArea());
         model.addAttribute("id", employee.getId());
 
         employeeMap.put(employee.getId(), employee);
@@ -52,4 +58,53 @@ public class EmployeeController {
         model.addAttribute("msg", "Welcome to the Netherlands!");
     }
 
+    @RequestMapping(value = "/employees/{name}", method = RequestMethod.GET)
+    @ResponseBody
+    public ResponseEntity<List<Employee>> getEmployeeByNameAndBeginContactNumber(@PathVariable final String name, @MatrixVariable final String beginContactNumber) {
+        final List<Employee> employeesList = new ArrayList<Employee>();
+        for (final Map.Entry<Long, Employee> employeeEntry : employeeMap.entrySet()) {
+            final Employee employee = employeeEntry.getValue();
+            if (employee.getName().equalsIgnoreCase(name) && employee.getContactNumber().startsWith(beginContactNumber)) {
+                employeesList.add(employee);
+            }
+        }
+        return new ResponseEntity<>(employeesList, HttpStatus.OK);
+    }
+
+    @RequestMapping(value = "/employeesContacts/{contactNumber}", method = RequestMethod.GET)
+    @ResponseBody
+    public ResponseEntity<List<Employee>> getEmployeeBycontactNumber(@MatrixVariable(required = true) final String contactNumber) {
+        final List<Employee> employeesList = new ArrayList<Employee>();
+        for (final Map.Entry<Long, Employee> employeeEntry : employeeMap.entrySet()) {
+            final Employee employee = employeeEntry.getValue();
+            if (employee.getContactNumber().equalsIgnoreCase(contactNumber)) {
+                employeesList.add(employee);
+            }
+        }
+        return new ResponseEntity<>(employeesList, HttpStatus.OK);
+    }
+
+    @RequestMapping(value = "employeeData/{employee}", method = RequestMethod.GET)
+    @ResponseBody
+    public ResponseEntity<Map<String, String>> getEmployeeData(@MatrixVariable final Map<String, String> matrixVars) {
+        return new ResponseEntity<>(matrixVars, HttpStatus.OK);
+    }
+
+    @RequestMapping(value = "employeeArea/{workingArea}", method = RequestMethod.GET)
+    @ResponseBody
+    public ResponseEntity<List<Employee>> getEmployeeByWorkingArea(@MatrixVariable final Map<String, LinkedList<String>> matrixVars) {
+        final List<Employee> employeesList = new ArrayList<Employee>();
+        final LinkedList<String> workingArea = matrixVars.get("workingArea");
+        for (final Map.Entry<Long, Employee> employeeEntry : employeeMap.entrySet()) {
+            final Employee employee = employeeEntry.getValue();
+            for (final String area : workingArea) {
+                if (employee.getWorkingArea().equalsIgnoreCase(area)) {
+                    employeesList.add(employee);
+                    break;
+                }
+            }
+        }
+        return new ResponseEntity<>(employeesList, HttpStatus.OK);
+    }
+
 }