https://blog.darven.top/tags/java/Recent content in Java on darcyjovenHugo -- gohugo.iozhTue, 13 Oct 2026 09:17:00 +0000https://blog.darven.top/p/bdl-ji-cheng-java-bao/Tue, 13 Oct 2026 00:00:00 +0000https://blog.darven.top/p/bdl-ji-cheng-java-bao/<h2 id="确保java包版本和服务器jre版本一致">确保java包版本和服务器jre版本一致 </h2><p><code>java -version</code></p> <h2 id="用静态类的方法返回值">用静态类的方法返回值 </h2> <blockquote> <p>bdl不支持面向对象编程（新版本支持单功能单一），所以用java静态类返回对象或者值来代替new Person()这种构建函数。</p> </blockquote> <h2 id="jar-包配置">jar 包配置 </h2><p>任意位置都可以，推荐位置<code>$TOP/ds4gl2/bin/javaad/jar</code></p> <h2 id="classpath-设置">CLASSPATH 设置 </h2><p>在文件<code>$TOP/bin/tiptop_env</code>中设置</p> <p>设置好CLASSPATH后重新登陆tiptop查看jar包是否在CLASSPATH中</p> <h2 id="bdl调用java代码">BDL调用JAVA代码 </h2><ol> <li>代码最顶部导入要使用的类</li> </ol> <div class="highlight"><div class="chroma"> <table class="lntable"><tr><td class="lntd"> <pre tabindex="0" class="chroma"><code><span class="lnt">1 </span><span class="lnt">2 </span><span class="lnt">3 </span></code></pre></td> <td class="lntd"> <pre tabindex="0" class="chroma"><code class="language-sql" data-lang="sql"><span class="line"><span class="cl"><span class="n">IMPORT</span><span class="w"> </span><span class="n">JAVA</span><span class="w"> </span><span class="n">com</span><span class="p">.</span><span class="n">alibaba</span><span class="p">.</span><span class="n">fastjson</span><span class="p">.</span><span class="n">JSON</span><span class="w"> </span></span></span><span class="line"><span class="cl"><span class="n">IMPORT</span><span class="w"> </span><span class="n">JAVA</span><span class="w"> </span><span class="n">com</span><span class="p">.</span><span class="n">alibaba</span><span class="p">.</span><span class="n">fastjson</span><span class="p">.</span><span class="n">JSONArray</span><span class="w"> </span></span></span><span class="line"><span class="cl"><span class="n">IMPORT</span><span class="w"> </span><span class="n">JAVA</span><span class="w"> </span><span class="n">com</span><span class="p">.</span><span class="n">alibaba</span><span class="p">.</span><span class="n">fastjson</span><span class="p">.</span><span class="n">JSONObject</span><span class="w"> </span></span></span></code></pre></td></tr></table> </div> </div><ol> <li>实际调用</li> </ol> <div class="highlight"><div class="chroma"> <table class="lntable"><tr><td class="lntd"> <pre tabindex="0" class="chroma"><code><span class="lnt"> 1 </span><span class="lnt"> 2 </span><span class="lnt"> 3 </span><span class="lnt"> 4 </span><span class="lnt"> 5 </span><span class="lnt"> 6 </span><span class="lnt"> 7 </span><span class="lnt"> 8 </span><span class="lnt"> 9 </span><span class="lnt">10 </span><span class="lnt">11 </span><span class="lnt">12 </span><span class="lnt">13 </span><span class="lnt">14 </span><span class="lnt">15 </span></code></pre></td> <td class="lntd"> <pre tabindex="0" class="chroma"><code class="language-sql" data-lang="sql"><span class="line"><span class="cl"><span class="o">//</span><span class="w"> </span><span class="err">定义</span><span class="n">java类型</span><span class="w"> </span></span></span><span class="line"><span class="cl"><span class="n">DEFINE</span><span class="w"> </span><span class="n">json_str</span><span class="w"> </span><span class="n">RECORD</span><span class="w"> </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="n">cust_num</span><span class="w"> </span><span class="nb">INTEGER</span><span class="p">,</span><span class="w"> </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="n">cust_name</span><span class="w"> </span><span class="nb">VARCHAR</span><span class="p">(</span><span class="mi">30</span><span class="p">),</span><span class="w"> </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="n">order_ids</span><span class="w"> </span><span class="n">JSONArray</span><span class="p">,</span><span class="w"> </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="n">arr_list</span><span class="w"> </span><span class="n">JSONArray</span><span class="w"> </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="k">END</span><span class="w"> </span><span class="n">RECORD</span><span class="w"> </span></span></span><span class="line"><span class="cl"><span class="n">DEFINE</span><span class="w"> </span><span class="n">json_obj</span><span class="w"> </span><span class="n">JSONObject</span><span class="w"> </span></span></span><span class="line"><span class="cl"><span class="w"> </span></span></span><span class="line"><span class="cl"><span class="n">LET</span><span class="w"> </span><span class="n">js</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s1">&#39;{&#34;cust_num&#34;:123,&#34;cust_name&#34;:&#34;caozq&#34;,&#34;order_ids&#34;:[234,567,789],&#34;arr_list&#34;:[{&#34;aa&#34;:&#34;aa&#34;,&#34;bb&#34;:&#34;cc&#34;},{&#34;aa&#34;:&#34;aa1&#34;,&#34;bb&#34;:&#34;bb1&#34;}]}&#39;</span><span class="w"> </span></span></span><span class="line"><span class="cl"><span class="o">//</span><span class="w"> </span><span class="err">访问静态函数</span><span class="w"> </span></span></span><span class="line"><span class="cl"><span class="n">LET</span><span class="w"> </span><span class="n">json_obj</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">com</span><span class="p">.</span><span class="n">alibaba</span><span class="p">.</span><span class="n">fastjson</span><span class="p">.</span><span class="n">JSON</span><span class="p">.</span><span class="n">parseObject</span><span class="p">(</span><span class="n">js</span><span class="p">)</span><span class="w"> </span></span></span><span class="line"><span class="cl"><span class="o">//</span><span class="w"> </span><span class="err">访问对象属性</span><span class="w"> </span></span></span><span class="line"><span class="cl"><span class="n">LET</span><span class="w"> </span><span class="n">json_str</span><span class="p">.</span><span class="n">cust_num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">json_obj</span><span class="p">.</span><span class="n">getIntValue</span><span class="p">(</span><span class="s2">&#34;cust_num&#34;</span><span class="p">)</span><span class="w"> </span></span></span><span class="line"><span class="cl"><span class="n">LET</span><span class="w"> </span><span class="n">json_str</span><span class="p">.</span><span class="n">cust_name</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">json_obj</span><span class="p">.</span><span class="n">getString</span><span class="p">(</span><span class="s2">&#34;cust_name&#34;</span><span class="p">)</span><span class="w"> </span></span></span></code></pre></td></tr></table> </div> </div>