Exception 无法获取属性'；显示'；关于grails中的null对象
我得到： 无法在我的grails项目中的null对象上获取属性“show” 这是我的密码Exception 无法获取属性'；显示'；关于grails中的null对象,exception,grails,groovy,nullpointerexception,nul,Exception,Grails,Groovy,Nullpointerexception,Nul,我得到： 无法在我的grails项目中的null对象上获取属性“show” 这是我的密码 package com.djamware class TestController { EmployeeService employeeService def secondaryDataSourceTemplate def mainDataSourceTemplate def testService static allowedMethods = [sa
package com.djamware
class TestController {
EmployeeService employeeService
def secondaryDataSourceTemplate
def mainDataSourceTemplate
def testService
static allowedMethods = [save: "POST", update: "PUT", delete: "DELETE"]
def index() {
render testService.show
}
def show() {
Employee employee=new Employee();
employee.setName("Gaurav chauhan")
employee.setEmail("chauhankgaurav97@gmail.com")
employee.setPosition("Java Devloper")
employee.setSalary(new Double(15000.0))
String sqlQuery = "SELECT name FROM Employee";
def counti=new Integer(1);
try {
def result = secondaryDataSourceTemplate.queryForList(sqlQuery)
println "result of Query is =====>"+result.name
println "Size of Result ========> "+result.size();
counti=result.size();
}
catch (Exception e) {
e.printStackTrace();
counti=new Integer(10);
}
employeeService.save(employee)
render counti;
}
}
尝试将
show
static allowedMethods = [show: "GET", save: "POST", update: "PUT", delete: "DELETE"]
您的应用程序上下文中是否有名为
testServiceallowedMethodsshowrender testService.showtestServicetestServiceshowtestServicetestService.show（）showtestServicenull