expand to advanced setup

lua/kickstart/plugins/lspconfig.lua

@@ -200,9 +200,67 @@ return {
       }
 
       local function jdtls_setup()
+        local project_name = vim.fn.fnamemodify(vim.fn.getcwd(), ':p:h:t')
+        -- calculate workspace dir
+        local workspace_dir = vim.fn.stdpath 'data' .. '/site/java/workspace-root/' .. project_name
+        -- get the mason install path
+        local install_path = require('mason-registry').get_package('jdtls'):get_install_path()
+        local jdtls_path = vim.fn.glob(install_path .. '/plugins/org.eclipse.equinox.launcher_*.jar')
+
+        -- try to detect sysname for config
+        local sysname = 'win'
+        if vim.fn.has 'unix' then
+          sysname = 'linux'
+        elseif vim.fn.has 'mac' then
+          sysname = 'mac'
+        end
+        -- set default config according to sysname
+        local config_path = install_path .. '/config_' .. sysname
+
+        -- See `:help vim.lsp.start_client` for an overview of the supported `config` options.
         local config = {
-          cmd = { require('mason-registry').get_package('jdtls'):get_install_path() .. '/bin/jdtls' },
+          -- The command that starts the language server
-          root_dir = vim.fs.dirname(vim.fs.find({ 'gradlew', '.git', 'mvnw' }, { upward = true })[1]),
+          -- See: https://github.com/eclipse/eclipse.jdt.ls#running-from-the-command-line
+          cmd = {
+            'java',
+
+            '-Declipse.application=org.eclipse.jdt.ls.core.id1',
+            '-Dosgi.bundles.defaultStartLevel=4',
+            '-Declipse.product=org.eclipse.jdt.ls.core.product',
+            '-Dlog.protocol=true',
+            '-Dlog.level=ALL',
+            '-Xmx1g',
+            '--add-modules=ALL-SYSTEM',
+            '--add-opens',
+            'java.base/java.util=ALL-UNNAMED',
+            '--add-opens',
+            'java.base/java.lang=ALL-UNNAMED',
+
+            '-jar',
+            jdtls_path,
+
+            '-configuration',
+            config_path,
+
+            '-data',
+            workspace_dir,
+          },
+
+          capabilities = capabilities,
+          root_dir = vim.fs.root(0, { '.git', 'mvnw', 'gradlew' }),
+
+          -- Here you can configure eclipse.jdt.ls specific settings
+          -- See https://github.com/eclipse/eclipse.jdt.ls/wiki/Running-the-JAVA-LS-server-from-the-command-line#initialize-request
+          -- for a list of options
+          settings = {
+            java = {},
+          },
+
+          -- Language server `initializationOptions`
+          -- See https://github.com/mfussenegger/nvim-jdtls#java-debug-installation
+          init_options = {
+            bundles = {},
+          },
         }
         require('jdtls').start_or_attach(config)
       end