{"id":1451,"date":"2023-06-11T22:36:29","date_gmt":"2023-06-11T14:36:29","guid":{"rendered":"https:\/\/usei.cn\/?p=1451"},"modified":"2023-06-11T23:00:22","modified_gmt":"2023-06-11T15:00:22","slug":"freemaker-%e6%a8%a1%e6%9d%bf%e5%bc%95%e6%93%8e","status":"publish","type":"post","link":"https:\/\/usei.cn\/index.php\/2023\/06\/11\/freemaker-%e6%a8%a1%e6%9d%bf%e5%bc%95%e6%93%8e\/","title":{"rendered":"FreeMaker \u6a21\u677f\u5f15\u64ce"},"content":{"rendered":"\n

FreeMarker\u662f\u4e00\u6b3e\u514d\u8d39\u7684Java\u6a21\u677f\u5f15\u64ce\uff0c\u662f\u4e00\u79cd\u57fa\u4e8e\u6a21\u677f\u548c\u6570\u636e\u751f\u6210\u6587\u672c\uff08HMLT\u3001\u7535\u5b50\u90ae\u4ef6\u3001\u914d\u7f6e\u6587\u4ef6\u3001\u6e90\u4ee3\u7801\u7b49\uff09\u7684\u5de5\u5177\uff0c\u5b83\u4e0d\u662f\u9762\u5411\u6700\u7ec8\u7528\u6237\u7684\uff0c\u800c\u662f\u4e00\u6b3e\u7a0b\u5e8f\u5458\u4f7f\u7528\u7684\u7ec4\u4ef6<\/p>\n\n\n\n

\"\"<\/div><\/a><\/figure>\n\n\n\n

<\/p>\n\n\n\n

\u6a21\u677f\u5f15\u64ce<\/td>thymeleaf<\/td>freemaker<\/td>velocity<\/td><\/tr>
<\/td><\/td><\/td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

github :  \u200bhttps:\/\/github.com\/apache\/freemarker\u200b<\/p>\n\n\n\n

\u5f15\u5165\u4f9d\u8d56<\/h3>\n\n\n\n
<dependency>\n  <groupId>org.freemarker<\/groupId>\n  <artifactId>freemarker<\/artifactId>\n  <version>2.3.32<\/version>\n<\/dependency><\/code><\/pre>\n\n\n\n
\u5e38\u7528\u6307\u4ee4\u547d\u4ee4<\/h2>\n\n\n\n
assign \u81ea\u5b9a\u4e49\u53d8\u91cf\u6307\u4ee4<\/h3>\n\n\n\n
<#--\n\tassign \u81ea\u5b9a\u4e49\u53d8\u91cf\u6307\u4ee4\n\t\t\u8bed\u6cd5\uff1a\n\t\t\t<#assign \u53d8\u91cf\u540d=\u503c>\n\t\t\t<#assign \u53d8\u91cf\u540d=\u503c \u53d8\u91cf\u540d=\u503c> \uff08\u5b9a\u4e49\u591a\u4e2a\u53d8\u91cf\uff09\n-->\n<#assign str=\"hello\">\n${str} <br>\n<#assign num=1 names=[\"zhangsan\",\"lisi\",\"wangwu\"] >\n${num} -- ${names?join(\",\")}\r<\/code><\/pre>\n\n\n\n
if elseif else \u903b\u8f91\u5224\u65ad\u6307\u4ee4<\/h3>\n\n\n\n
<#--\r\n   if, else, elseif \u903b\u8f91\u5224\u65ad\u6307\u4ee4\r\n   \t\u683c\u5f0f\uff1a\r\n   \t<#if condition>\r\n   \t\t\t...\r\n   \t\t<#elseif condition2>\r\n   \t\t\t...\r\n   \t\t<#elseif condition3>\r\n   \t\t\t...\r\n   \t\t<#else>\r\n   \t\t\t...\r\n   \t<\/#if>\r\n   \t\u6ce8\uff1a\r\n   \t\t1. condition, condition2\u7b49\uff1a\u5c06\u88ab\u8ba1\u7b97\u6210\u5e03\u5c14\u503c\u7684\u8868\u8fbe\u5f0f\u3002\r\n   \t\t2. elseif \u548c else \u6307\u4ee4 \u662f\u53ef\u9009\u7684\u3002\r\n-->\r\n<#assign score = 80>\r\n<#if score < 60>\r\n   \u4f60\u4e2a\u5c0f\u6e23\u6e23\uff01\r\n   <#elseif score == 60>\r\n   \t\u5206\u4e0d\u5728\u9ad8\uff0c\u53ca\u683c\u5c31\u884c\uff01\r\n   <#elseif score gt 60 && score lt 80>\r\n   \t\u54ce\u54df\u4e0d\u9519\u54e6\uff01\r\n   <#else>\r\n   \t\u4f60\u5f88\u68d2\u68d2\u54e6\uff01\r\n<\/#if>\r\n<br>\r\n<#-- \u5224\u65ad\u6570\u636e\u662f\u5426\u5b58\u5728 -->\r\n<#assign list=\"\">\r\n<#if list??>\r\n   \u6570\u636e\u5b58\u5728\r\n   <#else>\r\n   \t\u6570\u636e\u4e0d\u5b58\u5728\r\n<\/#if>\r\n<\/code><\/pre>\n\n\n\n
list \u904d\u5386\u6307\u4ee4<\/h3>\n\n\n\n
<#--\r\n    list\u6307\u4ee4\r\n        \u683c\u5f0f1\uff1a\r\n            <#list sequence as item>\r\n            <\/#list>\r\n        \u683c\u5f0f2\uff1a\r\n            <#list sequence as item>\r\n            <#else>\r\n                \u5f53\u6ca1\u6709\u9009\u9879\u65f6\uff0c\u6267\u884celse\u6307\u4ee4\r\n            <\/#list>\r\n        \u6ce8\uff1a\r\n            1. else \u90e8\u5206\u662f\u53ef\u9009\u7684\r\n            2. sequence\uff1a \u60f3\u8981\u8fed\u4ee3\u7684\u9879\uff0c\u53ef\u4ee5\u662f\u5e8f\u5217\u6216\u96c6\u5408\u7684\u8868\u8fbe\u5f0f\r\n            3. item\uff1a \u5faa\u73af\u53d8\u91cf \u7684\u540d\u79f0\r\n            4. \u5f53\u6ca1\u6709\u8fed\u4ee3\u9879\u65f6\uff0c\u624d\u4f7f\u7528 else \u6307\u4ee4\uff0c \u53ef\u4ee5\u8f93\u51fa\u4e00\u4e9b\u7279\u6b8a\u7684\u5185\u5bb9\u800c\u4e0d\u53ea\u662f\u7a7a\u5728\u90a3\u91cc\r\n-->\r\n<#assign users = [\"\u5f20\u4e09\",\"\u674e\u56db\",\"\u738b\u4e94\"]>\r\n<#-- \u904d\u5386\u5e8f\u5217 -->\r\n<#list users as user>\r\n    ${user}\r\n<\/#list>\r\n<br>\r\n<#--\u5224\u65ad\u6570\u636e\u4e0d\u4e3a\u7a7a\uff0c\u518d\u6267\u884c\u904d\u5386 \uff08\u5982\u679c\u5e8f\u5217\u4e0d\u5b58\u5728\uff0c\u76f4\u63a5\u904d\u5386\u4f1a\u62a5\u9519\uff09-->\r\n<#if users2??>\r\n    <#list users2 as user>\r\n        ${user}\r\n    <\/#list>\r\n<\/#if>\r\n<br>\r\n<#assign users3 = []>\r\n<#-- \u5f53\u5e8f\u5217\u6ca1\u6709\u6570\u636e\u9879\u65f6\uff0c\u4f7f\u7528\u9ed8\u8ba4\u4fe1\u606f -->\r\n<#list users3 as user>\r\n    ${user}\r\n<#else>\r\n    \u5f53\u524d\u6ca1\u6709\u6570\u636e\uff01\r\n<\/#list>\r\n<\/code><\/pre>\n\n\n\n
macro \u81ea\u5b9a\u4e49\u6307\u4ee4\u5b8f<\/h3>\n\n\n\n
<#--\r\n    macro \u81ea\u5b9a\u4e49\u6307\u4ee4 \uff08\u5b8f\uff09\r\n        1. \u57fa\u672c\u4f7f\u7528\r\n        \u683c\u5f0f\uff1a\r\n            <#macro \u6307\u4ee4\u540d>\r\n                \u6307\u4ee4\u5185\u5bb9\r\n            <\/#macro>\r\n        \u4f7f\u7528\uff1a\r\n            <@\u6307\u4ee4\u540d><\/@\u6307\u4ee4\u540d>\r\n         2. \u6709\u53c2\u6570\u7684\u81ea\u5b9a\u4e49\u6307\u4ee4\r\n        \u683c\u5f0f\uff1a\r\n            <#macro \u6307\u4ee4\u540d \u53c2\u6570\u540d1 \u53c2\u6570\u540d2>\r\n                \u6307\u4ee4\u5185\u5bb9\r\n            <\/#macro>\r\n        \u4f7f\u7528\uff1a\r\n            <@\u6307\u4ee4\u540d \u53c2\u6570\u540d1=\u53c2\u6570\u503c1 \u53c2\u6570\u540d2=\u53c2\u6570\u503c2><\/@\u6307\u4ee4\u540d>\r\n    \u6ce8\uff1a\r\n        1. \u6307\u4ee4\u53ef\u4ee5\u88ab\u591a\u6b21\u4f7f\u7528\u3002\r\n        2. \u81ea\u5b9a\u4e49\u6307\u4ee4\u4e2d\u53ef\u4ee5\u5305\u542b\u5b57\u7b26\u4e32\uff0c\u4e5f\u53ef\u5305\u542b\u5185\u7f6e\u6307\u4ee4\r\n-->\r\n<#-- \u5b9a\u4e49\u57fa\u672c\u7684\u81ea\u5b9a\u4e49\u6307\u4ee4 -->\r\n<#macro address>\r\n    \u00a9 1999\u20132015 The FreeMarker Project. All rights reserved.\r\n<\/#macro>\r\n<#-- \u4f7f\u7528\u6307\u4ee4 -->\r\n<@address><\/@address> <br>\r\n<@address><\/@address>\r\n<hr>\r\n<#-- \u5b9a\u4e49\u6709\u53c2\u6570\u7684\u81ea\u5b9a\u4e49\u6307\u4ee4 -->\r\n<#macro queryUserByName uname>\r\n    \u901a\u8fc7\u7528\u6237\u540d\u67e5\u8be2\u7528\u6237\u4fe1\u606f - ${uname}\r\n<\/#macro>\r\n<#-- \u4f7f\u7528\u6307\u4ee4\uff0c\u5e76\u4f20\u9012\u53c2\u6570 -->\r\n<@queryUserByName uname=\"admin\"><\/@queryUserByName> <br>\r\n<#-- \u5b9a\u4e49\u6709\u591a\u4e2a\u53c2\u6570\u7684\u81ea\u5b9a\u4e49\u6307\u4ee4 -->\r\n<#macro queryUserByParams uname uage>\r\n    \u901a\u8fc7\u591a\u4e2a\u9910\u5bbf\u67e5\u8be2\u7528\u6237\u4fe1\u606f - ${uname} - ${uage}\r\n<\/#macro>\r\n<#-- \u4f7f\u7528\u6307\u4ee4\uff0c\u5e76\u4f20\u9012\u591a\u4e2a\u53c2\u6570 -->\r\n<@queryUserByParams uname=\"admin\" uage=18><\/@queryUserByParams> <br>\r\n<hr>\r\n<#-- \u81ea\u5b9a\u4e49\u6307\u4ee4\u4e2d\u5305\u542b\u5185\u7f6e\u6307\u4ee4 -->\r\n<#macro cfb>\r\n    <#list 1..9 as i>\r\n        <#list 1..i as j>\r\n            ${j}*${i}=${j*i}&nbsp;\r\n        <\/#list>\r\n        <br>\r\n    <\/#list>\r\n<\/#macro>\r\n<@cfb><\/@cfb>\r\n<@cfb><\/@cfb>\r\n<#-- \u52a8\u6001\u6570\u636e -->\r\n<#macro cfb2 num>\r\n    <#list 1..num as i>\r\n        <#list 1..i as j>\r\n            ${j}*${i}=${j*i}&nbsp;\r\n        <\/#list>\r\n        <br>\r\n    <\/#list>\r\n<\/#macro>\r\n<@cfb2 num=5><\/@cfb2>\r\n<\/code><\/pre>\n\n\n\n
nested \u5360\u4f4d\u6307\u4ee4<\/h3>\n\n\n\n
nested \u6307\u4ee4\u6267\u884c\u81ea\u5b9a\u4e49\u6307\u4ee4\u5f00\u59cb\u548c\u7ed3\u675f\u6807\u7b7e\u4e2d\u95f4\u7684\u6a21\u677f\u7247\u6bb5\u3002\u5d4c\u5957\u7684\u7247\u6bb5\u53ef\u4ee5\u5305\u542b\u6a21\u677f\u4e2d\u4efb\u610f\u5408\u6cd5\u7684\u5185\u5bb9\u3002<\/p>\n\n\n\n
<#--\r\n    nested \u5360\u4f4d\u6307\u4ee4\r\n        nested \u76f8\u5f53\u4e8e\u5360\u4f4d\u7b26,\u4e00\u822c\u7ed3\u5408macro\u6307\u4ee4\u4e00\u8d77\u4f7f\u7528\u3002\r\n        \u53ef\u4ee5\u5c06\u81ea\u5b9a\u4e49\u6307\u4ee4\u4e2d\u7684\u5185\u5bb9\u901a\u8fc7nested\u6307\u4ee4\u5360\u4f4d\uff0c\u5f53\u4f7f\u7528\u81ea\u5b9a\u4e49\u6307\u4ee4\u65f6\uff0c\u4f1a\u5c06\u5360\u4f4d\u5185\u5bb9\u663e\u793a\u3002\r\n-->\r\n<#macro test>\r\n    \u8fd9\u662f\u4e00\u6bb5\u6587\u672c\uff01\r\n    <#nested>\r\n    <#nested>\r\n<\/#macro>\r\n<@test><h4>\u8fd9\u662f\u6587\u672c\u540e\u9762\u7684\u5185\u5bb9\uff01<\/h4><\/@test>\r\n<\/code><\/pre>\n\n\n\n
 import \u5bfc\u5165\u6307\u4ee4<\/h3>\n\n\n\n
import \u6307\u4ee4\u53ef\u4ee5\u5f15\u5165\u4e00\u4e2a\u5e93\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5b83\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u547d\u540d\u7a7a\u95f4\uff0c \u7136\u540e\u5728\u90a3\u4e2a\u547d\u540d\u7a7a\u95f4\u4e2d\u6267\u884c\u7ed9\u5b9a\u8def\u5f84\u7684\u6a21\u677f\u3002\u53ef\u4ee5\u4f7f\u7528\u5f15\u5165\u7684\u7a7a\u95f4\u4e2d\u7684\u6307\u4ee4\u3002
\u65b0\u5efacommons.ftl\u6587\u4ef6
commons.ftl<\/p>\n\n\n\n
<#macro cfb>\r\n\t<#list 1..9 as i>\r\n\t\t<#list 1..i as j>\r\n\t\t\t${j}*${i}=${j*i}&nbsp;\r\n\t\t<\/#list>\r\n\t\t<br>\r\n\t<\/#list>\r\n<\/#macro>\r<\/code><\/pre>\n\n\n\n
\u5728\u5176\u4ed6ftl\u9875\u9762\u4e2d\u901a\u8fc7import\u5bfc\u5165commons.ftl\u7684\u547d\u540d\u7a7a\u95f4\uff0c\u4f7f\u7528\u8be5\u547d\u540d\u7a7a\u95f4\u4e2d\u7684\u6307\u4ee4
f03.ftl<\/p>\n\n\n\n
<#-- \u5bfc\u5165\u547d\u540d\u7a7a\u95f4 -->\r\n<#import \"commons.ftl\" as common>\r\n<#-- \u4f7f\u7528\u547d\u540d\u7a7a\u95f4\u4e2d\u7684\u6307\u4ee4 -->\r\n<@common.cfb><\/@common.cfb>\r<\/code><\/pre>\n\n\n\n
include \u5305\u542b\u6307\u4ee4<\/h3>\n\n\n\n
\u53ef\u4ee5\u4f7f\u7528 include \u6307\u4ee4\u5728\u4f60\u7684\u6a21\u677f\u4e2d\u63d2\u5165\u53e6\u5916\u4e00\u4e2a FreeMarker \u6a21\u677f\u6587\u4ef6 \u3002 \u88ab\u5305\u542b\u6a21\u677f\u7684\u8f93\u51fa\u683c\u5f0f\u662f\u5728 include \u6807\u7b7e\u51fa\u73b0\u7684\u4f4d\u7f6e\u63d2\u5165\u7684\u3002 \u88ab\u5305\u542b\u7684\u6587\u4ef6\u548c\u5305\u542b\u5b83\u7684\u6a21\u677f\u5171\u4eab\u53d8\u91cf\uff0c\u5c31\u50cf\u662f\u88ab\u590d\u5236\u7c98\u8d34\u8fdb\u53bb\u7684\u4e00\u6837\u3002<\/p>\n\n\n\n
<#--\u5305\u542b\u6307\u4ee4(\u5f15\u5165\u5176\u4ed6\u9875\u9762\u6587\u4ef6) include-->\r\n<#--html\u6587\u4ef6-->\r\n<#include \"test.html\">\r\n<#--freemarker\u6587\u4ef6-->\r\n<#include \"test.ftl\">\r\n<#--text\u6587\u4ef6-->\r\n<#include \"test.txt\">\r\n<\/code><\/pre>\n\n\n\n
\u8fd0\u7b97\u7b26<\/h2>\n\n\n\n
\u7b97\u672f\u8fd0\u7b97\u7b26<\/p>\n\n\n\n
<!--\r\n\t\u7b97\u672f\u8fd0\u7b97\r\n\t\t+\u3001-\u3001*\u3001\/\u3001%\r\n-->\r\n<#assign a1 = 8 a2 = 2 >\r\n${a1} + ${a2} = ${a1 + a2} <br\/>\r\n${a1} - ${a2} = ${a1 - a2} <br\/>\r\n${a1} * ${a2} = ${a1 * a2} <br\/>\r\n${a1} \/ ${a2} = ${a1 \/ a2} <br\/>\r\n${a1} % ${a2} = ${a1 % a2} <br\/>\r\n<!--\u5b57\u7b26\u4e32\u8fd0\u7b97-->\r\n${\"hello\" + \",\" + \"freemarker\"}\r\n<\/code><\/pre>\n\n\n\n
\u903b\u8f91\u8fd0\u7b97\u7b26<\/p>\n\n\n\n
<#--\r\n\t\u903b\u8f91\u8fd0\u7b97\u7b26\r\n\t\t&&\u3001||\u3001!\r\n-->\r\n<\/code><\/pre>\n\n\n\n
\u6bd4\u8f83\u8fd0\u7b97\u7b26<\/p>\n\n\n\n
<#--\r\n\t\u6bd4\u8f83\u8fd0\u7b97\u7b26\r\n\t\t> (gt): \u5927\u4e8e\u53f7\uff0c\u63a8\u8350\u4f7f\u7528 gt\r\n\t\t< (lt)\uff1a \u5c0f\u4e8e\u53f7\uff0c\u63a8\u8350\u4f7f\u7528 lt\r\n\t\t>= (gte): \u5927\u4e8e\u7b49\u4e8e\uff0c \u63a8\u8350\u662f\u7528 gte\r\n\t\t<= (lte): \u5c0f\u4e8e\u7b49\u4e8e\uff0c\u63a8\u8350\u4f7f\u7528 lte\r\n\t\t== \uff1a \u7b49\u4e8e\r\n\t\t!= : \u4e0d\u7b49\u4e8e\r\n-->\r\n<\/code><\/pre>\n\n\n\n
\u7a7a\u503c\u8fd0\u7b97\u7b26<\/p>\n\n\n\n
<#--\r\n\t\u7a7a\u503c\u8fd0\u7b97\u7b26\r\n\t\t1. ??:\u5224\u65ad\u662f\u5426\u4e3a\u7a7a\uff0c\u8fd4\u56de\u5e03\u5c14\u7c7b\u578b\r\n\t\t\u5982\u679c\u4e0d\u4e3a\u7a7a\u8fd4\u56de false\uff0c \u5982\u679c\u4e3a\u7a7a\u8fd4\u56de true\uff0c\u4e0d\u80fd\u76f4\u63a5\u8f93\u51fa\r\n\t\t${(name??)?string}\r\n\t2. !: \u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff0c\u5982\u679c\u4e3a\u7a7a\uff0c\u5219\u8bbe\u7f6e\u9ed8\u8ba4\u503c\r\n\t\t1. \u8bbe\u7f6e\u9ed8\u8ba4\u4e3a\u7a7a\u5b57\u7b26\u4e32\uff1a\r\n\t\t${name!}\r\n\t\t2. \u8bbe\u7f6e\u6307\u5b9a\u9ed8\u8ba4\u503c\r\n\t\t${name!'zhangsan'}\r\n-->\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
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