spring mvc + freemarker 整合

<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/templates/" />
        <property name="suffix" value=".ftl" />
    </bean>-->

    <mvc:annotation-driven />

    <context:component-scan base-package="com.bingco" />

    <!--配置freemarker视图解析器 -->

    <bean id="freemarkerConfig"

          class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">

        <property name="templateLoaderPath" value="/WEB-INF/templates/" />

    </bean>

    <bean id="viewResolver"

          class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">

        <property name="suffix" value=".ftl" />

        <property name="contentType" value="text/html; charset=UTF-8" />

    </bean>

</beans>

　　这是单独使用的Demo：

@GetMapping("/getHtml")
    public String method2() throws IOException, TemplateException {
        Configuration configuration = new Configuration(Configuration.VERSION_2_3_22);
        configuration.setDirectoryForTemplateLoading(Paths.get(templates_path + File.separator).toFile());
        configuration.setDefaultEncoding("UTF-8");
        configuration.setTemplateExceptionHandler(TemplateExceptionHandler.DEBUG_HANDLER);

        String tempName = "test.ftl";
        Template template = configuration.getTemplate(tempName);
        Map<String, Object> map = new HashMap<>();
        map.put("message", "Hello World Java !");

        File file = new File("D:/temp/" + tempName.substring(0, tempName.indexOf(".") + 1) + "html");
        if (!file.exists()) {
            try (Writer out = new OutputStreamWriter(
                    new FileOutputStream(file))) {
                template.process(map, out);
                out.flush();
                System.out.println("\t-- over --");
            }
        }

        return "redirect:/index.jsp";
    }