/**

 * @Author：LJ

 * @Description： activiti Javascript类型表单字段

 * @Date: 2018/5/17

 * @Modified By:

 */

public class JavascriptFormType extends AbstractFormType {

    /**

     * 把表单中的值转换为实际的对象

     * @param propertyValue

     * @return

     */

    @Override

    public Object convertFormValueToModelValue(String propertyValue) {

        return propertyValue;

    }

    /**

     * 把实际对象的值转换为表单中的值

     * @param modelValue

     * @return

     */

    @Override

    public String convertModelValueToFormValue(Object modelValue) {

        return (String) modelValue;

    }

    /**

     * 定义表单类型的标识符

     *

     * @return

     */

    @Override

    public String getName() {

        return "javascript";

    }

}

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://www.springframework.org/schema/beans

                http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
....

        <!-- 自定义表单字段类型 -->

        <property name="customFormTypes">

            <list>

                <bean class="me.kafeitu.activiti.form.JavascriptFormType" />

            </list>

        </property>

    </bean>

</beans>

package com.example.demo.config;

import com.example.demo.config.formType.JavascriptFormType;

import org.activiti.engine.form.AbstractFormType;

import org.activiti.spring.SpringProcessEngineConfiguration;

import org.springframework.beans.BeansException;

import org.springframework.beans.factory.config.BeanPostProcessor;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;

import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

import java.util.Arrays;

import java.util.List;

/**

 * @Author：LJ

 * @Description：

 * @Date: 2018/3/21

 * @Modified By:

 */

@Configuration

public class ApplicationConfig extends WebMvcConfigurerAdapter {/**

     * 方式一

     *@Author LJ

    */

    @Bean

    public BeanPostProcessor activitiConfigurer() {

        return new BeanPostProcessor() {

            @Override

            public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {

                if (bean instanceof SpringProcessEngineConfiguration) {

                    List<AbstractFormType> customFormTypes = Arrays.<AbstractFormType>asList(new JavascriptFormType());

                    ((SpringProcessEngineConfiguration)bean).setCustomFormTypes(customFormTypes);

                }

                return bean;

            }

            @Override

            public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {

                return bean;

            }

        };

    }

}